In February 2022, RenoRun announced a $142 million funding round led by Tiger Global — the kind of headline that made the Montreal construction-tech startup briefly the darling of Canadian venture. The company delivered building materials to job sites within two hours, tripling revenue each of the three prior years. Its CEO, Eamonn O’Rourke, was fielding pressure from investors to grow faster. “Everyone wanted us to grow faster,” he told The Globe and Mail. “There was no reason to believe we couldn’t.”
Fourteen months later, RenoRun was in insolvency, owning more than $55 million to creditors and unable to secure even a $30 million bridge round after four separate attempts. Total capital raised: over $200 million CAD. Outcome: permanently closed.
RenoRun is not an anomaly. It’s a case study with a template. Across the $50 trillion B2B commerce landscape — a market multiple times larger than consumer e-commerce — well-funded startups have been building digital marketplaces for over two decades, and most have failed. The pattern holds from the dotcom era through the ZIRP-fueled euphoria of 2021 into the wreckage of 2023. According to Applico’s annual B2B marketplace rankings, new funding for the top 50 marketplaces dropped to just over $750 million in 2023, down from more than $2.4 billion at the 2021 peak — and several of the 2023 cohort didn’t even survive to see the correction. The number of deals reached a five-year low.
The question isn’t whether the B2B commerce opportunity is real. It clearly is. Amazon Business now drives roughly $35 billion in annualized gross sales, analysts project it reaching $80 billion before 2030, and 93% of B2B buyers now choose digital channels for procurement. The question is structural: why does one company with a trillion-dollar logistics moat succeed where hundreds of funded startups can’t?
The answer involves a collision of forces that, individually, any of these companies might have survived. Together, they constitute something close to a natural filter — one that only the rarest combination of product design, patient capital, and vertical discipline can pass through.
The Promise and the Trap
B2B marketplaces attracted venture capital for comprehensible reasons. The addressable market is enormous. U.S. manufacturers and distributors combined managed roughly $14.87 trillion in total sales in 2023. Digital penetration remains low compared to consumer e-commerce. The businesses being served are often running on decades-old procurement processes: fax orders, relationship-dependent pricing, manual invoicing. The pitch writes itself — bring Amazon’s efficiency to an industry that’s still faxing purchase orders.
The dotcom era’s first wave of B2B marketplaces, companies like Chemdex, FreeMarkets, and Covisint, made essentially the same pitch. Almost all of them collapsed between 2000 and 2003. As investor Sam Stone observed in a post-mortem analysis, the failure was partly technological — “software wasn’t advanced enough then to build much else” — and partly behavioral: “trust takes time to build, and many supplier-buyer relationships in the B2B world had been formed and nurtured over many years.” Most of those first-generation platforms were online classifieds with thin functionality that couldn’t accommodate bids, sampling, extended negotiations, or the idiosyncratic requirements of industrial purchasing.
The second wave, beginning around 2015, assumed the technology problem was solved and proceeded confidently into what turned out to be a different set of problems entirely.
The Liquidity Problem: Why Day Zero Is Existential
Every marketplace starts with nothing on both sides. The founding team has no buyers because there are no sellers, and no sellers because there are no buyers. This chicken-and-egg problem is widely understood in theory and consistently underestimated in practice — but in B2B it carries a specific brutality.
As marketplace expert Sameer Singh put it bluntly in an interview with Hokodo: “You can’t get a buyer because you have no supply, you can’t get a supplier because you don’t have a buyer.” The path from zero to “critical mass” — the point at which network effects are real rather than theoretical — requires a marketplace to subsidize one or both sides, often for years. Consumer platforms like Uber and Airbnb solved this through geographic concentration: they launched city by city, building dense supply in narrow zones before expanding. The strategy worked because the product was relatively undifferentiated and buyers were already online.
B2B is different in almost every relevant dimension. Buyers are not individuals searching on phones; they are procurement departments working within approved vendor lists, ERP integrations, and multi-year contracts. Sellers are not drivers or homeowners willing to try a new app for incremental income; they are distributors and manufacturers whose entire go-to-market strategy is built around sales relationships, account managers, and net-60 payment terms. Convincing a $200 million specialty chemicals distributor to list on a new marketplace requires months of enterprise sales, compliance review, and integration work — only to find that the platform’s buyer base is still too thin to justify the effort.
Most marketplace failures occur before network effects activate. Companies run out of capital trying to grow both sides simultaneously, never achieving the liquidity that would make the platform self-sustaining. The ones that survive do so by picking one side and dominating it ruthlessly before attempting to attract the other. Amazon in books, Faire in independent retail — both started narrow, built conviction on one side of the ledger, and expanded only once the flywheel was visibly spinning. B2B startups, pressured by investors to show growth across their entire stated TAM, routinely skip this discipline.
The Disintermediation Trap
Even marketplaces that solve the liquidity problem face a second existential threat: the moment of their own success contains the seed of their revenue destruction.
In B2B, the average order value is large. A meaningful transaction might be $50,000, $500,000, or more. Once a buyer and seller meet on a platform and complete that first transaction, they have each other’s contact information, an established relationship, and a shared motivation to eliminate the 2–15% commission the marketplace collects on every subsequent deal. The buyer saves money. The seller nets more per transaction. They both win — and the platform loses.
This is called disintermediation, and it is particularly acute in B2B contexts where relationships are long-term, transactions are high-value, and the alternative to using the platform — email, phone, existing EDI connections — is frictionless. A freelancer marketplace can partially protect itself through reputation systems: a freelancer’s reviews only travel with their profile, not their Gmail address. A B2B marketplace serving, say, the steel procurement market cannot make the same claim. Buyer and seller already know who each other are. The platform introduced them once; continuing to tax that relationship requires an ongoing value proposition that pure matchmaking cannot sustain.
The platforms that survive disintermediation do so by embedding themselves deeply into the transaction rather than sitting on top of it. Research published in Management Science found that restricting alternative communication technologies reduced disintermediation by around 18%, but that’s a defensive measure, not a solution. The real answer is owning something buyers and sellers can’t recreate bilaterally: financing, logistics, compliance documentation, quality assurance, or proprietary data. The marketplace must become an irreplaceable service layer, not a directory that charges for introductions. Building that service layer costs money — often a lot of money — before it generates revenue, which compounds the capital problem already outlined above.
The Unit Economics Illusion
Venture capital thrives on GMV. Gross merchandise volume is easy to report, easy to compare, and easy to use in pitch decks. A B2B marketplace can scale to $100 million or $250 million in GMV within 18 to 24 months — and as one investment analysis from Nuwa Capital notes, that can happen with a gross margin below 2% and a product margin well into negative territory in the early stages.
The math works like this: a B2B marketplace operating in a low-margin sector like FMCG staples, building materials, or commodity chemicals might post a take rate of 3–5%. After payment processing, logistics coordination, customer support, and the operational overhead of managing complex B2B transactions — custom pricing, multi-tier approval workflows, net payment terms, dispute resolution — the contribution margin per transaction can be negative for years. Low-take-rate B2B marketplaces, like those in wholesale cars or steel, operate in markets with immense scale but structurally depressed margins, requiring enormous transaction volumes before fixed-cost leverage kicks in.
This is fundamentally different from a SaaS business, where gross margins typically exceed 70%. An investor used to SaaS unit economics reading a B2B marketplace deck that shows $150 million in GMV and $7.5 million in net revenue with negative EBITDA might project a path to profitability through scale. What that projection often misses is the operational complexity that scales with transaction volume in B2B — the supplier onboarding calls, the credit underwriting, the logistics exceptions, the compliance documentation — none of which automates cleanly the way software does.
RenoRun illustrates this trap precisely. The company doubled revenue to $77 million in 2022 — genuine, meaningful growth. But it was spending in advance of that growth, had built a 550-person team, and had expanded to six cities across two countries, all premised on continued cheap capital enabling it to cross the inflection point where unit economics improved. When interest rates rose, Tiger Global got cold feet, and the funding environment changed overnight, there was no path to break-even at its current cost structure. Revenue growth is not a shield when the underlying margin structure requires a specific scale that the market has suddenly decided not to fund.
The Incumbent Problem
B2B marketplaces face an adversary that consumer platforms rarely had to contend with: incumbents who understand the business better, already have the relationships, and are motivated to destroy you.
Traditional B2B distributors — companies like Grainger, Fastenal, Ferguson, and thousands of regional players — have decades of accumulated trust with their customers. These relationships are not easily replicated by a startup offering a sleeker interface and better search. In verticals like chemical products and industrial machinery, BCG research suggests as much as 90–95% of revenue is structurally protected from digital disruption, owing to product complexity, regulatory requirements, and the irreplaceable value of application expertise. A procurement manager buying specialty adhesives for aerospace applications is not making that choice on a marketplace. She has a qualified supplier relationship, a validated specification, and a liability-driven incentive to stick with the known vendor.
This protection is not uniform — BCG finds that office supplies and janitorial equipment can have up to 50% of revenue at risk from digital disruption, while industrial machinery sits near the bottom of vulnerability. But the verticals most attractive to startups (large, fragmented, apparently ripe for digitization) tend to be the ones where incumbents are most entrenched. A startup entering industrial distribution faces a Grainger with $15 billion in annual revenue, a national fulfillment network, and an ERP integration footprint that took twenty years to build. The startup’s competitive advantage — better UX, faster search, lower friction — matters to a small cohort of digitally-native buyers but is largely invisible to the core procurement departments that drive 80% of volume.
Indigo Ag is the most dramatic recent illustration. Once valued at $3.5 billion and a top-10 entrant in Applico’s B2B marketplace rankings, it raised a down round in 2023 that cut its valuation by 94% to just $200 million and pivoted away from the marketplace model entirely. Its problems were partly agronomic — the promise of yield-improving biological treatments proved harder to deliver than anticipated — but they were also structural. Large agricultural input companies were not about to route procurement through a startup platform when their existing relationships with distributors gave them pricing leverage, credit terms, and agronomic support that no marketplace could replicate on a timeline investors would accept.
Where Money Becomes a Liability
There is a specific pathology of well-funded failure that haunts B2B marketplaces. In the zero-interest-rate era of 2020–2021, the standard advice from top-tier investors to marketplace founders was to grow as fast as possible, capture the category, and solve profitability later. That advice has a logic in winner-take-all markets with strong network effects — get big enough that competitors can’t catch you.
B2B marketplaces, however, are not typically winner-take-all. They are fragmented by vertical, by geography, by buyer size, and by the specific complexity of the underlying commodity. A marketplace dominating chemical procurement in Western Europe does not automatically have a moat in pharmaceutical raw material procurement in Southeast Asia. The network effects are real but localized. This means that pouring venture capital into rapid geographic and vertical expansion doesn’t build a defensible moat — it builds a sprawling cost structure that must be supported by revenue from markets where the marketplace hasn’t yet solved the liquidity problem.
RenoRun tried to be in Montreal, Toronto, Boston, Chicago, Philadelphia, and Washington simultaneously, expanding to nearly 600 employees before any single market had demonstrated sustainably positive unit economics. When the capital needed to maintain that structure became unavailable, the company had no profitable core to retreat to. The geography that should have been the proof-of-concept first was instead a small fraction of a too-large whole.
This is not an unusual trajectory. It is, in fact, the standard one. Investors eager to see the TAM captured pressure founders to expand before consolidating. Founders, lacking the leverage to resist and facing boards that reward growth metrics, comply. The business that might have worked in two cities gets stretched across twelve before any of them are stable.
The Complications: Why Some Critics Are Wrong
The argument that B2B marketplaces are structurally broken deserves a serious challenge, because several successful counterexamples exist.
Faire, which connects independent retailers with emerging brands, has topped Applico’s B2B marketplace rankings for multiple consecutive years and secured a Shopify partnership and investment in 2023 at a $12.5 billion valuation. LeafLink, which serves the cannabis wholesale market, raised a $100 million Series D in February 2023 even amid a difficult funding environment. Amazon Business’s $35 billion is not solely a reclassification of existing revenue — market analysts project $80 billion by 2030, and the platform’s penetration of the Fortune 100 and major hospital systems suggests genuine displacement of traditional procurement channels.
What these successes share is instructive. Faire succeeded by being indispensable to a specific kind of buyer (the independent retailer) who had historically lacked access to emerging brands, and by offering financing and net payment terms as a core product feature — not an afterthought. LeafLink operates in a market where regulatory fragmentation creates genuine matchmaking value: cannabis brands cannot sell across state lines through traditional distributor relationships, so a compliant digital marketplace solves a problem incumbents literally cannot. Amazon Business leverages infrastructure that no startup can replicate: fulfillment centers in every major metro, a Prime membership that already dominates business purchasing decisions for indirect spend, and a feedback loop between B2C customer trust and B2B adoption.
The more interesting counterexample is the SaaS-enabled marketplace model, which represents a genuine structural innovation. Companies like Bluon — which started as a diagnostic tool for HVAC technicians and built a marketplace on top of that installed base — and Acculynx — which did the same in roofing — have found that solving an operational software problem first creates defensible marketplace liquidity. If contractors are already using your app to pull equipment manuals, cross-reference parts, and get technical support, integrating distributor purchasing into that workflow is a natural extension. The marketplace arrives as a feature of something already valuable, not as a cold start requiring adoption from scratch. This is a meaningfully different and more defensible approach — one that explains the sustained presence of software-first marketplace hybrids in Applico’s top 10 rankings.
The argument against B2B marketplaces, then, is not that they cannot work. It is that the generic “apply Amazon to [industry X]” pitch almost never works, and the venture capital system of 2019–2022 funded hundreds of companies built on that premise.
What the Survivors Know
B2B marketplace success, when it happens, tends to follow a consistent pattern that looks almost nothing like the standard venture-scale playbook.
Vertical density matters more than horizontal breadth. A marketplace that owns 60% of transactions in one specific category — HVAC parts in the Southeast, cannabis wholesale in California, specialty chemicals in the Midwest — is structurally more defensible than one with 3% share across ten categories. The former has genuine pricing power and can attract the supply-side investment required to build services that prevent disintermediation. The latter is just a catalog.
Embedded services — financing, logistics, compliance, data — are not optional features for later. They are the primary mechanism for preventing bypass and justifying the take rate. The research is consistent that 83% of B2B buyers will abandon a purchase if suitable payment terms are not available at checkout — which means a marketplace that doesn’t solve credit is not actually solving B2B purchasing. Financing is expensive to offer and requires sophisticated underwriting, but it is also the primary structural lock-in that makes disintermediation economically unattractive.
Capital discipline is underrated as a strategic asset. The companies that survived the 2022–2023 correction were disproportionately those that had maintained positive unit economics or at least visibility to profitability in their core market before expanding. The ones that failed were those whose burn rate was premised on the assumption that the next round would always come.
The last lesson is perhaps the most counterintuitive: the best-positioned players in many B2B verticals are often not the startups. They are the incumbents — distributors, manufacturers, industry associations — who have the supply-side relationships, the customer trust, and the operational infrastructure that startups spend decades trying to replicate. The startup advantage in B2B is real but narrow: better software, faster product iteration, and freedom from legacy cost structures. That advantage is most durable when deployed in service of a specific, underserved buyer problem, not as a generic assault on an entire industry’s distribution layer.
Implications for Capital and Founders
Investors who backed the 2019–2022 wave of B2B marketplaces have largely taken their losses. The correction in aggregate funding — from $2.4 billion in 2021 to $750 million in 2023, levels not seen since 2019 — represents a market repricing every bit as severe as the post-dotcom crash of 2001. The average deal size in 2023 remained high at $30 million, but the volume collapsed, suggesting a flight to safety: investors still writing checks are doing so into companies with demonstrated traction, not just compelling pitches.
For the next cohort, the standard for Series A in marketplaces has materially shifted. Where the median net revenue for a Series A marketplace round was around $1.4 million in 2021, it has risen to roughly $2.5 million today — a 75% increase — reflecting investors’ insistence on seeing real economic activity before committing growth capital.
For founders, the strategic question has sharpened. The B2B marketplace opportunity has not gone away. Business spending remains substantially offline, procurement processes remain inefficient, and the generational shift toward digitally-native procurement professionals is real. But the path to capturing that opportunity requires a different starting point. The question is no longer “how fast can we grow GMV?” It is: “what specific problem, for what specific buyer, is unsolvable outside a marketplace — and how do we make the transaction sticky enough that buyers and sellers never want to leave?” Only when the answer to that question is clear and demonstrable in a narrow vertical should the capital-intensive expansion begin.
The Reckoning and What Remains
RenoRun’s investors had a chance to save the company for $30 million — a fraction of what they’d already committed. They couldn’t agree. That disagreement killed a business that was still growing revenue. It’s a story about investor coordination failures as much as anything else, and it illustrates a final structural disadvantage of the well-funded startup: when a company has fifteen investors across four rounds, each with different return expectations and entry prices, the political economy of rescue financing can be worse than just letting it collapse.
The B2B marketplace landscape that emerges from the 2023 correction is smaller, more focused, and more realistic about timelines. The companies remaining in Applico’s top rankings share a common trait: they have stopped treating GMV as a proxy for business quality and started building toward the embedded service layers that generate genuine switching costs. The SaaS-to-marketplace model is not the only viable path, but it is increasingly the dominant one — and its dominance reflects a structural truth that the pure-marketplace hype cycle suppressed for half a decade.
Business commerce is being digitized. That process will generate enormous value. But it will do so slowly, vertically, and in favor of operators who understand that in B2B, the relationship is the product — and any platform that doesn’t protect it will eventually be disintermediated right out of existence.
Research conducted through April 2026. Key sources include Applico’s annual B2B Marketplace Rankings, Digital Commerce 360, BetaKit, The Globe and Mail, Management Science, BCG, and Nuwa Capital.
