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The chicken-and-egg trap every marketplace faces
💡 Marketplaces fail when they launch broad and thin; they win by saturating one tiny network dense enough to be useful, then expanding.
Picture launching a food-delivery app. No restaurants will join because there are no customers ordering — and no customers will download it because there are no restaurants. This is the cold start problem: a two-sided marketplace is worthless until both sides show up, but neither side wants to be first. It's why most marketplace startups die before they ever get going.
The counterintuitive fix is to start absurdly small. Instead of launching across a whole city, winners saturate a single tiny slice — one neighborhood, one campus, one niche — until it reaches an atomic network: the smallest group dense enough that the service is actually useful. Uber didn't blanket San Francisco; it flooded a few blocks so a rider always saw a car nearby. Density beats breadth, because a thin spread of supply over a huge area feels empty to everyone.
Founders also cheat the balance on purpose. They subsidize the harder side (Uber guaranteed drivers minimum pay to get them on the road) or build a single-player mode — value even before the network exists. OpenTable first sold restaurants reservation-management software; the diner marketplace came later, once restaurants were already on board. The lesson, popularized in Andrew Chen's The Cold Start Problem, is that you don't launch a marketplace — you bootstrap one side at a time.
Source: The Cold Start Problem — Andrew Chen