L'analyse économique offre deux visions distinctes de la notion de concurrence, que l'on peut faire correspondre plus largement à deux écoles d'appréhension des phénomènes économiques. Dans l'analyse traditionnelle, tout d'abord, la concurrence est définie et étudiée comme un état du...

The paper focuses on the innovative French broadband Internet industry that is characterised by inertia phenomena in terms of technology choice. We argue that although inertia on the supply side helps to explain the faster diffusion of ADSL, a more complete picture can be obtained when we...

The existence of costs to consumers to switch between products is central to the process by which firms set prices. Their effect on the introduction and diffusion of innovative technologies is not by now well understood, however. This paper aims to study this effect based on evidence in the...

This work explores some distributional properties of aggregate output growth-rate time series. We show that, in the majority of OECD countries, output growth-rate distributions are well-approximated by symmetric exponential-power densities with tails much fatter than those of a Gaussian. Fat...