We develop an equilibrium model of vertical foreclosure with the choice of input specifications. Vertical foreclosure occurs as the upstream division of the integrated firm makes a specialized input for its sister downstream division while it would, as an independent firm, provide a generalized...

This article analyzes a technology adoption process in which the effect of informational spillover interacts with network externalities. The interplay of informational externalities and payoff interdependency induces risk-averse and clustering behavior in the technology-adoption process. The...

The idea that an incumbent supplier may tie two complementary products to fend off potential entrants is popular among practitioners yet is not fully understood in formal economic theory. This article makes sense of the argument by formally deriving a dynamic version of the old leverage...

In this article, I explore the problem of sequential and irreversible technology choice in the presence of network externalities when the technologies stochastically evolve over time. Early potential users are shown to adopt an irreversible technology too early compared to the social optimum....

This article analyzes the effects of net neutrality regulation on investment incentives for Internet service providers (ISPs) and content providers (CPs), and their implications for social welfare. Concerning the ISPs' investment incentives, we find that capacity expansion decreases the sale...

We provide a simple model of repeated extortion. In particular, we ask whether corrupt government officials' opportunism to demand more once entrepreneurs have made sunk investments entails further distortion in resource allocations. If the choice of technology is left to the entrepreneurs, the...