This article examines requirements tying of a competitively supplied good to a monopolized good. It expands the set of market conditions in which this instrument is known to be profitable. With heterogeneous, privately informed buyers, a firm can profit by tying two goods even when demands for...

This paper derives firm boundaries as the outcome of an equilibrium coordination mechanism. The analysis is premised on the notion that efficient production and distribution are achieved through a mechanism that coordinates three basic activities: i) input acquisition, ii) production, iii)...