Founder vesting is producing litigation over dead weight on the cap table.

Crunchbase News published a piece from Siegel & Grellas on how the default four-year founder vesting schedule leaves departed founders holding large stakes that complicate later financings and control, increasingly drawing lawsuits aimed at clawing shares back (Crunchbase). The AI-era relevance is the shrinking team: when a venture-scale product ships with four to twenty-four people, each founder's percentage is larger and a single departure is a bigger structural problem than in a fifty-person seed team.