This paper explores the implications of price-dependent demand in spatial models of product differentiation. We introduce consumers with a quasi-linear utility function in the framework of the Salop (1979) model. We show that the so-called excess entry theorem relies critically on the assumption...

We develop a monopolistic-competition model of closed two-sector one-factor economy, where agents are (continuously) heterogeneous in their entrepreneurship abilities and choose between being employees or entrepreneurs. The sufficient conditions in terms of variable elasticity of substitution...

This paper is motivated by the empirical regularity that industries differ greatly in the level of firm turnover, and 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...

This paper investigates the impact of increased media competition on the quantity and quality of news provided and, ultimately, on political participation. Drawing upon existing literature on vertical product differentiation, I explore the conditions under which an increase in the number of...

We examine the effects of entry on the pricing behavior of incumbent legacy airlines in a market where the newcomer is a rapidly expanding low-cost carrier - the Brazilian airline industry in the early 2000s. We estimate the timing and the determinants of price responses to entry allowing them...

Generic drugs play an important role in disciplining drug prices and controlling rising drug costs. However, the effect that an additional generic drug competitor has on drug prices is difficult to measure because the number of firms competing in a market is endogenously determined. We identify...

This paper examines the economic consequences of code-sharing agreements (CSA) in the airline market. CSA can be viewed as a vertical contract between airlines, which sometimes co-own the code-shared flights. Our structural model aims to understand how and to what extent CSA distorts market...

The U.S. and EU Merger Guidelines strongly emphasize the relevance of the "ease of entry" argument in merger evaluations. Up to now, very little is known empirically about how mergers affect entry and exit, and the resulting number of firms in the markets. We empirically test this aspect of...

We develop a model of a city populated by heterogeneous agents. Agents self-select into entrepreneurship, and entrepreneurs set up firms which hire workers. We characterize the equilibrium matching between firms and workers, as well as the within-city assignment of agents to locations. We then...

I examine the implications of employer learning and statistical discrimination for initial employment rates, wages, and occupational attainment and for wage growth and occupational change over a career using a model in which the sensitivity of productivity to worker skill is increasing in the...