The notion 'semicollusion' refers to situations where firms collude in one (or several) choice variable(s) and compete in others. For example, firms collude on prices and compete on advertising. Although the notion 'semicollusion' is not so often used explicitly, it turns out that the topic is...

We analyze competition between two horizontally differentiated network providers. New technologies help the providers to collect consumer-specific information, and such technologies increase the providers' ability to use price discrimination. One example is the mobile providers' choice of...