Using a survey on cultural habits and consumption behavior of 2,000 individuals, we study the determinants of physical purchases and pay-downloads in four cultural industries: books, recorded music, movies, and video games. We show that the impact of piracy on legal purchases differs among these...

This article studies e-Government uses in order to determine if, among Internet users, e-administration services benefit to specific categories of the population. From individual French data (insee [2005]) and controlling for the selection bias related to Internet use, we show that among...

The purpose of the model is to analyse the genesis and evolution of consumption oriented chat rooms in the Web space. We study an endogeneous consumption dynamics in which individuals make their buying decisions on the basis of a threefold information: their own consumption past experience...

In this paper, we propose a model of competition between a private television channel, financed by advertising, and a public channel, financed by advertising and a transfer of public funds. In this framework, we study the impact of an advertising quota imposed on the public channel on the two...

This paper deals with the question of the security of the payments on Internet and proposes a formal framework to study its impact on the development of the electronic commerce. We show, within the framework of a competitive supply of the security of the payments, that a weak development of the...