Most startups fail from internal team dysfunction rather than competition or poor product. VCs prioritize founder quality and team chemistry because products can pivot, but broken team dynamics typically prove fatal. The article unpacks critical decisions for early-stage founders: choosing co-founders carefully, establishing equal or near-equal equity splits, and implementing vesting schedules (4-year vesting with 1-year cliff as YC standard) to protect both company structure and founder alignment. Proper equity frameworks and co-founder compatibility are foundational for survival through startup's inevitable hardship.