How to Build a Marketplace Startup That Solves the Chicken-and-Egg Problem - Startup Fortune

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Jun 21, 2026 · 12:55 PM<br>– Users Online

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How to Build a Marketplace Startup That Solves the Chicken-and-Egg Problem

How to build a marketplace startup without getting stuck in the chicken-and-egg trap comes down to sequencing, not simultaneous execution. OpenTable solved it by selling restaurants standalone software before the diner side existed. Airbnb solved it by targeting a single event in a single city. The founders who got it right didn't crack the paradox. They sidestepped it.

Judith Murphy

Jun 21, 2026 · 1:04 PM ·<br>6 min read<br>359 views

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The chicken-and-egg problem that kills two-sided marketplaces is a sequencing failure, not a paradox. Fix the sequence and the problem largely dissolves.

Building a two-sided marketplace startup looks impossible on paper. Supply won't arrive without demand, and demand won't arrive without supply. Founders feel stuck before they've written a line of code. But understanding how to build a marketplace startup that actually works comes down to one insight: don't try to grow both sides at once. Decide which side is the bottleneck, solve for that one first, and let the other follow. The paradox doesn't get cracked. It gets sidestepped.

Every marketplace has a scarce side and a more recruitable side. Getting that diagnosis right early, before you've spent six months running acquisition campaigns in the wrong direction, is most of the actual work.

OpenTable is the clearest working example of what this looks like in practice. When it launched in 1998, restaurants wouldn't join a reservation platform with no diners on it, and diners had no reason to use a platform with no restaurants. So OpenTable didn't pitch restaurants on a marketplace at all. It sold them reservation management software: a standalone product with genuine standalone value. The marketplace came after, once the supply base was real. By the time Priceline acquired OpenTable in 2010 for $2.6 billion, it had more than 20,000 restaurant partners, most of them signed up initially because the software was worth using before a single end-user arrived.

This approach is sometimes called single-side subsidization, but the label makes it sound more complicated than it is. Give the scarce side an offer that works whether or not the other side exists yet. It doesn't have to be free software. Guaranteed minimum payouts work. Exclusive access to a category where suppliers have no comparable alternative works. The only requirement is that the supplier is better off joining than not joining before a single customer ever shows up.

Uber's early driver subsidies in San Francisco followed the same logic. They weren't charity. They were a deliberate, time-limited investment in the scarce side of a market where rider demand could be generated through marketing but driver supply couldn't. The company tracked driver hours, wait times, and rider growth carefully because those numbers told it when the subsidy had done its job and liquidity had become self-sustaining. Most founders subsidize both sides indefinitely and call it user growth. That's not a strategy. It's a delayed reckoning with unit economics that catches up with you when the next funding round doesn't close.

Identifying the scarce side isn't always obvious. In ride-sharing it was drivers. For food delivery entering a new city, it's restaurants. For a B2B software marketplace, it's often the enterprise buyer, because landing one large procurement team willing to vet new vendors is worth a hundred smaller suppliers sitting idle. The question worth asking early: if you could get one side for free today, which would change more?

Constrain the Launch Until Liquidity Is Genuinely Real

In 2008, Airbnb's founders identified the Democratic National Convention in Denver as a structural demand moment: thousands of attendees, not enough hotel inventory. They didn't try to launch a global platform. They targeted one city, one event, a few dozen listings. Supply was personally reachable. The demand was already there and supply was the constraint. They positioned the company at an existing gap rather than trying to manufacture one.

Craigslist started even smaller. Craig Newmark launched a single email list for the San Francisco technology...