The paper studies how second degree price discrimination can be implemented in a duopoly with differentiated products. Two firms serve consumers having heterogeneous willingness to pay for the good, willingness to pay being private knowledge. Consumers choose from a menu of tariffs and are...

We present a model of the TV-advertising market that encompasses both the product markets and the market for TV programs. We argue that the TV industry has several idiosyncratic characteristics that need to be modeled, and show that the strategic interaction in this industry differs from other...

Should a public firm locate close to or far away from a private firm, i.e., is duplication or diversity the optimum policy? We extend the classical Hotelling location game with exogenously fixed prices to the case where consumers' transportation costs are asymmetric, in the sense that it is more...

The capacity investment by a new firm into an established market is explored in a repeated price game. If the entrant expects collusion to prevail upon entry, it may not practice "judo economics" but instead choose to install enough capacity to serve the entire market. This occurs when collusion...

Two rival firms must decide when to invest in R&D and whether the new products should be compatible. I show that network externalities may induce the firms to advance their introduction of new incompatible technologies.

A model of semicollusion, where firms collude on prices and compete on capacities, is tailor-made to the characteristics of the Norwegian cement market and tested empirically on this particular market for the period 1927-1982. The results indicate that the rapid increase in capacity and thereby...

Two TV channels compete on programming with respect to both time schedule (continuous choice) and programme progile (discrete choice), with a directional constraint concerning time schedule (viewers cannot watch TV before they get home). We show how the relative importance of programme progile...