Nous situons notre analyse dans le contexte de l'ouverture a la concurrence d'un bien reseau dans lequel l'operateur historique, integre verticalement, gere en monopole l'infrastructure et est concurrence sur les sectuers des services. La qualite du bien reseau est le minimum des qualite de...

Deux faits stylises majeurs ont ete mis en evidence en Economie geographique. D'une part, la croissance economique s'accompagne d'une augmentation des inegalites regionales au sein d'un pays. D'autre part, les externalites technologiques restent localisees dans l'espace. Cet article s'attache,...

This paper considers a model of two interconnected networks with different qualities. There are call externalities in the sense that consumers value calls they send and receive. Networks compete in two part tariffs. We show that call externalities create private incentives for each competitor to...

This paper studies competition between Managed Care Organizations (MCOs) and Conventional Insurers. Most of the time, MCOs sign exclusive contracts with providers and these vertical restrictions associated to differentiation in the providers’ market imply a risk segmentation. Taking into...

This paper contributes to the economic analysis of merger control by taking into account the efficiency gains for the design of structural merger remedies when the competition authorities do not observe the magnitude of efficiency gains. We show that whenever divestitures are necessary, the...

The efficiency defence was long delayed in the European merger control due to costly implementation issues. In this paper we argue that the upstream consequences of the efficiency defence should equally be considered, namely the improvement of the distribution of notified mergers through the...