Using a simple model of two-sided markets, we show that, in the social optimum, platform pricing leads to an inherent cost recovery problem. This result is driven by the positive externality of participation that users on either side of the market exert on the opposite side. The contribution of...

We derive a stationary equilibrium in a two-player multi-stage game with endogenous discounting. At each stage, the probability to reach the next stage is determined by the players' current actions. We assume that the players are myopic in the sense that they take the future strategies of their...