We analyze the existence of pure strategy symmetric price equilibria in a generalized version of Salop (1979)'s circular model of competition between differentiated products - namely, we allow consumers to purchase more than one brand. When consumers purchase all varieties from which they derive...

Multi-sided platforms (MSPs), which bring together two or more interdependent groups of customers, have recently risen to economic and business prominence in many industries. This paper first lays out a simple micro-founded framework which aims to organize academic and managerial thinking about...

This paper provides a first pass at clarifying the economic tradeoffs between two polar strategies for market intermediation: the merchant mode, in which the intermediary buys from sellers and resells to buyers; and the two-sided platform mode, under which the intermediary enables affiliated...

Reviews the various articles of the IIR2001, and lays out the theme of having the appropriate market structure and regulation in various sectors of physical infrastructure including electricity, telecom, water and sewage, transportation and energy

This paper analyses the extent of inter-format retail competition between supermarkets, discounters and drugstores in Germany, using data from the German market for diapers. We estimate a random coefficient logit model at the individual household level. Based on consumer substitution patterns,...

Given various recent antitrust investigations on the retail sector, we deal with uncovering demand systems substitution patterns for a particular market (diapers) to investigate the inter-format competition (supermarkets vs. discounters vs. drugstores). Using the uncovered demand system we...

This paper develops a model in which market structure is determined endogenously by the choice of intermediation mode. We consider two representative business modes of intermediation that are widely used in real-life markets: one is a middleman mode by which an intermediary holds inventories...

This paper develops a model in which market structure is determined endogenously by the choice of intermediation mode. We consider two representative business modes of intermediation that are widely used in real-life markets: one is a middleman mode where an intermediary holds inventories which...

In this paper, we empirically study how flagship entry in an online marketplace affects consumers, the platform, and various sellers on the platform. We find flagship entry may benefit consumers by expanding the choice set, by intensifying price competition within the entry brand, and by...

This paper develops a model in which market structure is determined endogenously by the choice of intermediation mode. We consider two representative business modes of intermediation that are widely used in real-life markets: one is a middleman mode where an intermediary holds inventories which...