Instead of fighting incumbents for their entrenched "hostage" customers, startups should focus on "Greenfield Bingo." This strategy involves building a better product and selling it to the steady stream of new companies that are not yet locked into a solution. This approach thrives in markets with high rates of new business formation.

Contrary to the typical 'build a small MVP' advice, YC encouraged Scout to build a large, complex product for a small niche. This recognizes that in high-friction markets like EdTech, a comprehensive solution is required from day one to persuade customers to switch.

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.

When investors criticize a small Total Addressable Market (TAM), reframe it as a strategic 'wedge.' Show the sequence: dominate this initial niche, then use that beachhead to expand into adjacent markets, demonstrating a clear, credible path to scale.

AI-native companies find more success selling to new businesses or those hitting an inflection point (e.g., outgrowing QuickBooks). Trying to convince established companies to switch from deeply embedded systems like NetSuite is a much harder 'brownfield' battle with a higher cost of acquisition.

Don't fear competitive "red oceans"; they signal huge demand. The winning strategy is to start in an artificially constrained niche (a puddle) where you can dominate. Once you're the biggest fish there, sequentially expand your market to a pond, then a lake, and finally the ocean.

While Bain's $5.6B acquisition of incumbent PowerSchool didn't inspire Scout's creation, it served as powerful external validation. It confirmed the market's importance and stickiness, reinforcing the team's conviction that they were tackling a significant problem.

Scout discovered its perfect initial market—online schools in California—not through analysis, but by noticing they were the only segment responding to thousands of cold emails. This self-selection revealed a niche with a deep, unmet need ignored by larger players.

Nominal followed Peter Thiel's advice by first targeting the small, acutely painful problem of post-test data review. By building a 10x better solution for this specific niche, they established a strong beachhead from which they could then credibly expand into adjacent markets like manufacturing and fleet operations.