We analyze …firms incentives to bundle and tie in the telecommunications industry. As a fi…rst step, we develop a discrete-choice demand model where fi…rms sell products that may combine several services in bundles, and consumers choose assortments of different types of products available...

We investigate how remedies in merger control affect information acquisition by an antitrust agency. We identify conditions under which an ''extreme options'' regime which does not allow for remedies improves information acquisition by the agency which increases consumer surplus. The legislator...

We consider Hotelling location games with global and local players. Global players are active in several markets, while local players act in a single market only. The decisive feature is that global players cannot tailor their product to each market but have to choose a location on the Hotelling...

Mergers that substantially lessen competition are challenged by antitrust authorities. Instead of blocking anticompetitive transitions straight away, authorities might choose to negotiate with the merging parties and allow the transactions to proceed with modifications that restore or preserve...

Competition policy is a field where economists and lawyers have to work hand in hand to achieve efficiency and, in the international arena, global welfare. At the present, there is no internationally recognised official authority under the auspices of which there would take shape the global...

Antitrust law regulates economic activity but differs in its operation from what is traditionally considered "regulation." Where regulation is often industry-specific and involves the direct setting of prices, product characteristics, or entry, antitrust law focuses more broadly on maintaining...

In this paper, we empirically measure the effect of the DIVX preannouncement in the DVD market. We do this by measuring the effect of potential (incompatible) competition on a network undergoing growth. We find that there are network effects in the DVD market and that the preannouncement of DIVX...

We examine the intersection of patents and antitrust where a patent holder uses the monopoly power it possesses in the market for a patented product to exclude competitors in an adjacent market and attempt to monopolize or monopolize the adjacent market. The present scheme for awarding patents...

This paper asks how much the strength of network effects depends on the stability and structure of the underlying social network. I answer this using extensive micro-data on all potential adopters of a firm's internal video-messaging system and their subsequent video-messaging. This firm's New...

In Cournot's model of complements, the producers of A and B are both monopolists. This paper extends Cournot's model to allow for competition between complements on one side of the market. Consider two complements, A and B, where the A+B bundle is valuable only when purchased together. Good A is...