All ecosystem models are just rough approximations of reality. In the case of communications ecosys-tems, numerous actors interact with each other and create an incredibly complex process that tends to depress even the most diligent modeler. In recent decades, various methods have been used to...

In the advent of postal market liberalization in several European countries we expect that the incumbent operators anticipate entry by competitors who are not required to offer universal service, i.e. coverage of the entire country and uniform pricing. The market for postal service exhibits...