I generalize the workhorse model of network competition to include income effects in call demand. Empirical work has shown call demand to increase signi ficantly with income. For any positive income effect, network operators prefer a termination rate above marginal cost if networks are...

Under full substitutability of preferences, it is known that a competitive equilibrium exists in trading networks, and is equivalent to (chain) stable outcomes. In this paper, we formulate the problem of finding an efficient outcome as a generalized submodular flow problem on a suitable network....

Digital technologies have led to the emergence of many platforms in our economy today. In certain platform networks, buyers in one market purchase services from providers in many other markets, whereas other platform networks may comprise local clusters in which buyers primarily purchase...

We analyze a simple game of technology adoption with network effects and multiple new technologies. Potential adopters can adopt early, late, or not at all. We show that one of the reasons for the failure of new technologies can be the presence of multiple incompatible variants of that...