evidence. Without offsetting tax increases the legislation will plausibly reduce prices but significant entry into the industry …

This paper develops a framework to appreciate the observed heterogeneity of firm size distributions and the entry and … pattern (varieties and markets) of existing firms in combination with entry/exit of firms. The empirical results are …

competitor. We show that this mechanism is welfare improving but it generates inefficient entry. That is a more efficient …

We build a model of firm-level innovation, productivity growth and reallocation featuring endogenous entry and exit. A … provides a good fit to the dynamics of firm entry and exit, output and R&D, and its implied elasticities are in the ballpark of ….5% because it deters entry of new high-type firms. On the contrary, substantial improvements (of the order of 5% improvement in …

We empirically quantify the welfare implications of bank entry in the United States between 2000 and 2008. We use a … market outcomes. We find no evidence for under- or over-entry. Compared with the socially efficient outcome, there is a mild … significantly improves welfare under free entry. …

in a duopoly that product characteristics will be efficient. Entry of a third firm will be more profitable in the fringes …. Furthermore entry results in too much variety. Finally, the paper presents a novel argument in favour of bundling. …