Tax enforcement can be prohibitively costly when market transactions and participants are difficult to observe. Evasion among market participants may reduce tax revenue and provide certain types of suppliers an undue competitive advantage. Whether efforts to fully enforce taxes are worthwhile...

Due to the presence of network externalities in multi-sided markets, evaluating the performance of a platform is more difficult than for a firm in a traditional market. In this paper I develop methods for determining platform marginal costs, market power, and post-merger price predictions. I...

This paper studies the impact of taxes on a two-sided platform's pricing, participation, and welfare. Two types of taxes are examined: a tax on access to the platform and a tax on transactions between the platform's buyers and sellers. Access taxes have clear implications while transaction taxes...

This paper considers intra-platform technologies that allow a consumer's content and preferences to carryover across platform generations. In many platform industries content consumed on a platform's previous generation can be used on the platform's new generation. Naturally, a consumer with...

We challenge the dichotomy of network effects and highlight that they are not an exogenous characteristic of networks, but endogenous to the decisions of network users. When users choose which activities to perform in a network, multi-activity users transform indirect into direct network...

While home sharing has been shown to increase housing prices, the additional potential income it generates can at least partially offset higher prices and provide meaningful insurance against the risk of affordability-related displacement. Empirically, we leverage the enforcement of city-level...