In den letzten Jahren haben sich die Telekommunikation (TK) und das Internet zu einem hoch innovativen Bereich entwickelt, der ein wichtiger Wachstumstreiber für die gesamte Volkswirtschaft werden kann. Eine Regulierung, die primär auf die Beschränkung marktmächtiger Unternehmen abzielt,...

We model competition between two unregulated mobile phone companies with price-elastic demand and less than full market coverage. We also assume that there is a regulated full-coverage fixed network. In order to induce stronger competition, mobile companies could have an incentive to raise their...

We consider a model with two firms operating their individual networks. Each firm can choose its price as well as its 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....