Higher Market Thickness Reduces Matching Rate in Online Platforms: Evidence from a Quasiexperiment

Market thickness is a key parameter that can make or break a platform’s business model. Thicker markets can offer more opportunities for participants to meet and higher chances that a potential match exists. However, they can also be vulnerable to potential search frictions. In this paper, using data from an online peer-to-peer holiday property rental platform, we aim to identify and measure the causal impact of market thickness on matching...