In a two period strategic model of entry deterrence (a la Dixit, 1980) where the incumbent firm moves before the …

, including the relationship between the Herfindahl index and social welfare, free versus socially optimal entry, concentration …

this entry sequence is socially efficient. …

the context of the effect of entry on firm selection in a Cournot setting. It is found that inefficient firms are more …

In a model of horizontal product differentiation, we show that local monopolies may exist under free entry when capital … is perfectly mobile. In contrast both with the situation of restricted entry and with the zero-profit approach to free … entry outcomes of Salop (1979), the unit profit rate of incumbent monopolists is positive and bounded above in equilibrium …

An infinite-horizon, stochastic model of entry and exit with sunk costs and imperfect competition is constructed …. Simple examples provide insights into: (1) the relationship between sunk costs and industry concentration, (2) entry when … current profits are negative, and (3) the relationship between entry and the length of the product cycle. A subgame perfect …

reduces the competitive pressure incumbents face which depresses productivity. Contrarily net entry strengthens competition … that focuses on two industrial features (1) slow firm entry/exit and (2) firm pricing that depends on the number of … tractable DGE model of endogenous firm entry/exit and endogenous markups. …

that entry and exit rates are positively correlated across industries. Our objective is to investigate the effect of sunk … costs and, in particular, market size on entry and exit rates, and hence on the age distribution of firms. We analyze a …. We show existence and uniqueness of a stationary equilibrium with simultaneous entry and exit: efficient firms survive …

, predatory, and entry deterring behaviour. Ascending and uniform-price auctions are particularly vulnerable to these problems (we …