This paper investigates the role of horizontal and vertical market structures in pricing differentiated products. The conceptual model demonstrates how substitution and complementarity relationships between products and across vertical channels relate to market concentration and market size. The...

This paper investigates the pricing and vertical organization of differentiated products under imperfect competition. In a multiproduct context, we examine how substitution/complementarity relationships among products and vertical structures relate to the exercise of market power. The analysis...

This paper investigates bundle pricing under imperfect competition. In a multiproduct context, we first examine how substitution/complementarity relationships among products can affect pricing. This is used to motivate multi-product generalizations of the Herfindahl-Hirschmann index (GHHI)...