We present a model where social media platforms offer plans that intermix entertaining content with digital advertising … advertising instead of subscription both for naïfs (because they are targeted by intense digital advertising, which makes them …

We study the efficiency of oligopoly equilibria in a model where firms compete over capacities and prices. The … demands across the firms. We first establish the existence of pure strategy subgame perfect equilibria (oligopoly equilibria … oligopoly equilibria of this game can be arbitrarily low. However, if the best oligopoly equilibrium is selected (among multiple …

framework for the analysis of growth driven by both entry of new firms and productivity improvements by continuing firms. Unlike … productivity improvements by incumbents in response to reduced entry, which may outweigh the positive effect of greater creative … destruction. As the model features entry of new firms and expansion and exit of existing firms, it also generates a non …

We build a model of firm-level innovation, productivity growth and reallocation featuring endogenous entry and exit. A …. The model provides a good fit to the dynamics of firm entry and exit, output and R&D. Taxing the continued operation of …

We study the efficiency of oligopoly equilibria in congested markets. The motivating examples are the allocation of …

, and Huggett, and models of entry, exit and industry dynamics in the spirit of Hopenhayn's work as special cases. Robust …