In this paper, we extend the concept of stability to vertical collusive agreements, involving downstream and upstream firms, using a setup of successive Cournot oligopolies. We show that a stable vertical agreement always exists: the unanimous vertical agreement involving all downstream and...

In this paper we model a situation of competition between two editors who are rivals in both the newpapers' and advertising industries.. To identify the consequences of this competition, we analyse a two-period sequential game whose players are the editors each selling a differentiated...

Generally, economists interested in network effects analyse these effects when the consumption externality created by the demand for the good is produced inside the industry itself. But it can be conceived that network effects take place from one industry to another. This happens when the...

The aim of this paper is to develop a dynamic model of migrations, in which migration is driven by size asymmetries between countries and by the relative preferences of consumers between private consumption and consumption of public goods. The dynamic trajectories heavily depend on the degree of...

In this paper we address the following question: is it more profitable, for an entrant in a differentiated market, to acquire an existing firm than to compete? We illustrate the answer by considering competition in the banking sector.

We consider a situation of duopolistic competition in the press industry, involving two editors competing in both the newspapers' and advertising markets. The population of readers in this market is differentiated in terms of their attitudes toward advertising; some of them are assumed to be...

We characterize the unique mixed-strategy equilibrium of an extension of the "television news sheduling game" of Cancian, Bergstrom and Bills (1995) where viewers want to watch the first newscast broadcast after they return home. A fraction of the viewers record randomly one of the newscast to...