Research joint ventures may coordinate research investments or improve research sharing. When research joint venture partners only share R&D results, large consortia are more profitable than small ones, and joint ventures prefer their rivals dispersed. According to a coalition formation game, an...

When a monopolist sells an input to an oligopoly, consumer and total surplus frequently are invariant to changes in passive ownership of the monopolist by downstream firms. Within broad classes of ownership profiles, strong invariance holds: the input and output choices of downstream firms are...

Research sharing is an important objective of many research joint ventures. When partners share R&D but do not maximize joint profits, large consortia are more profitable than small ones, and joint ventures prefer dispersed rivals. For much of the spillover space, a coalition formation game that...