Before revision:  In thinner markets, even though a static policy of full or no adoption can be suboptimal, we show it achieves a constant-factor approximation where the factor improves with market thickness. Using our analytical and empirical results, we revisit the current design of the FRUS platform and make location-specific policy recommendations. More broadly, our work sheds light on how other two-sided platforms can control the double-edged impacts that commitment levers have on growth and engagement  .
After revision:  In thinner markets, even though a static policy of full or no adoption can be suboptimal, we show it achieves a constant-factor approximation . Our finding is robust to incorporating heterogeneity in volunteer behavior. Our work sheds light on how other two-sided platforms can control the double-edged impacts that commitment levers have on growth and engagement .