In this paper we study an entrant's incentives to build a network infrastructure, when there is an initial phase of service-based competition where it leases access to the incumbent's infrastructure. We build a model in which the phase of service-based competition allows the entrant to step into...

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...

In a digital economy which is increasingly becoming an information and attention-based economy, search engines are occupying a central role shaped by the symbolic status of Google both in terms of its renown and its dominance of internet traffic. Despite their importance, economic models and...

Based on Hume's major philosophical works and on some of his Essays, this paper discusses formally the feasibility, from a Humean point of view, of a welfare policy which would aim at promoting the highest individual happiness whereas individual decisions, like individual happiness, are...

Textbooks and manuals on management suggest that managers are heroes who deal with difficult problems of collective adaptation and change. American films are similarly built on the premise of a hero confronted with extremely difficult situations. What if this hero figure promoted for so long in...

Ce mémoire a pour objet d'analyser en quoi la présence d'un réseau de prescripteurs, sur un marché donné, influence la stratégie marketing-mix d'une entreprise présente sur ce marché. Nous avons choisi, pour cette étude, de nous concentrer sur le marché public et plus précisément sur...