Startups often fail to displace incumbents because they become successful 'point solutions' and get acquired. The harder path to a much larger outcome is to build the entire integrated stack from the start, but initially serve a simpler, down-market customer segment before moving up.

In crowded markets, founders mistakenly focus on other startups as primary competition. In reality, most customers are unaware of these players. The real battle is against the customer's status quo: their current tools like spreadsheets, hiring a person, or using an old system. Your job is to beat those options.

Economist Bernd Hobart argues that large enterprises are too risk-averse for early AI adoption. The winning go-to-market strategy, similar to Stripe's, is for AI-native companies to sell to smaller, agile customers first. They can then grow with these customers, mature their product, and eventually sell the proven solution back to the legacy giants.

Startups often fail by making a slightly better version of an incumbent's product. This is a losing strategy because the incumbent can easily adapt. The key is to build something so fundamentally different in structure that competitors have a very hard time copying it, ensuring a durable advantage.

The fundamental goal is to become a "better competitive alternative" for a specific customer—being so superior that they bypass competitors to choose you. Achieving this state is the business equivalent of the house advantage in a casino (“the house vig”) and the only reliable way to build a lasting enterprise.

Instead of trying to steal entrenched 'hostage' customers from incumbents, startups should focus on a 'Greenfield' strategy. By building a superior product, they can capture the wave of new companies that are not yet locked into a legacy system and will choose the best available solution.

Large incumbents struggle to serve newly-formed startups because these customers offer low initial revenue but require significant sales and support. This P&L constraint creates a protected 'greenfield' market for new vendors to capture customers early and grow with them.

Contrary to fears of a "circular economy," YC founder Paul Graham advises that selling to other startups is optimal. They are smarter, less bureaucratic, and more representative of future trends. A product that succeeds with this discerning group is well-positioned for broader market success.

A major market opportunity exists when one side of an industry (e.g., insurance companies) adopts new technology like AI faster than its counterpart (e.g., hospitals). Startups can succeed by building tools that close this technology gap, effectively 'arming the rebels' and leveling the playing field.