WHEN CHURN IS THE MODEL

Summary from the TLDR Founders newsletter

Some businesses aren't meant to keep customers forever - they're deliberately designed for users to leave. Education platforms expect you to finish learning Spanish and move on. For these "recurring market" businesses, the metrics flip: instead of lifetime value and retention, what matters is solving one critical problem perfectly, showing up exactly when needed (usually via search), and compressing all your value into a single transaction. This changes everything about how you build - speed trumps depth, trust outweighs features, and your CAC payback must happen immediately, not over years.