externalities and network effects. It shows that the regulation of mobile termination rates based on "long-run incremental costs …

infrastructures. We also argue that ex ante regulation is distorting investment itself: incremental investment is privileged as … opposed to radical investment. In this context, we identify three possible options for regulation in the near future: 1 … answer this question, the paper focuses on the problem of investment and innovation in an ex ante regulated sector. Relying …

investment to build up its network. Assuming a skewed distribution of consumers, our model leads to an asymmetric market … structure with one firm choosing higher investments. While access regulation imposed on the dominant firm leads to lower prices …, positive welfare effects are diminished by strategic investment decisions of the firms. Within a dynamic game with indirect …