We identify a mistake in the specification of the demand system used in the strategic delegation model based on market shares by Jansen et al. (2007), whereby the price remains above marginal cost when goods are homogeneous. After amending this aspect, we perform a profit comparison with the...

This paper considers investment behavior of duopolistic firms subject to technological progress. It is assumed that initially both firms offer a homogeneous product, but after a stochastic waiting time they are able to implement a product innovation. Production capacities of both firms are...

We consider the impact of local and global spillover effects on the long run market shares of two populations of firms (e.g.~firms based in two different regions) who compete on a high-tech market. Production costs of a firm are (strongly) influenced by the number of local firms and (weakly) by...

This paper studies the evolution of two clusters of firms competing on a common market. Firms exit and enter a cluster based on the perceived chances for profits inside and outside the cluster. Information about profits are diffused by direct communication between firms. Internal and external...