The stochastic evolution of competition depends on the respective effort rates of the firms. We show that several effects are at work. The state tends to evolve in the direction where joint payoffs are greater. Since joint payoffs are related to joint product-market profits less joint effort...

In an industry where naturally monopolistic and competitive activities are vertically related, should the natural monopolist be allowed also to operate in the deregulated competitive sector? This paper assumes that monopoly pricing behavior is regulated and, therefore, the effect of vertical...

The paper presents two models of races in which there is both technological uncertainty and strategic interaction between competitors. The authors' aim is to see how the efforts of competitors in a race vary with the intensity of rivalry between them. In the principal model, which is of a...

We examine competitive non-linear pricing in a model in which consumers have heterogeneous and elastic demands and can buy from more than one supplier. It is an equilibrium for firms to offer a menu of efficient two-part tariffs, where the discount for one-stop shopping is such that the...