Consumer Search and Vertical Relations: The Triple Marginalization Problem

This paper shows that the double marginalization problem signicantly underestimates the ineciencies arising from vertical relations in markets where consumers who are uninformed about the wholesale arrangements be- tween manufacturers and retailers search for the best retail price. Consumer search provides manufacturers an additional incentive to substantially increase wholesale prices. Consequently, all market participants are worse o and we call this phenomenon the triple marginalization problem. We also show that, when the wholesale price is unknown, retail prices decrease and industry prof- its and consumer surplus increase in search cost, whereas the opposite is true when the wholesale price is known.

Price Discrimination between Retailers with and without Market Power

Some retail markets are more competitive than others. A manufacturer with market power in the wholesale market who sells his product to competing retailers in cities and monopolistic ones in each of various towns must set the wholesale price difference between towns and cities to be smaller than the transportation cost to prevent “grey market” arbitrage. If he uses linear pricing, the town retail price will be even higher than under single-retailer double marginalization. Two-part tariffs do not solve the problem as they would if there were a single retailer, because the wholesale unit price must be higher than marginal cost to prevent arbitrage to the cities. If transportation costs are low, price discrimination is difficult and two- part tariffs come to resemble inefficient linear monopoly pricing. High transportation costs allow greater efficiency in contracting, and this can outweigh the negative direct effect on welfare.price discrimination, double marginalization, retail network, transportation costs, two-part tariffs, vertical restraints

Product differentiation and vertical integration in presence of double marginalization

In this paper, we present a model of endogenous vertical integration and horizontal differentiation. There exists two output brands and two versions of the input. The only mean for output differentiation is the input version used in output production. Firms may choose to vertically integrate to produce internally the required input version at marginal cost, rather then to buy it at the market price, if that version is made available. We show that vertical mergers increase the possibility that output goods are differentiated. Moreover, this occurs when the cost to differentiate the input is high. On the other hand, vertical integration is detrimental for brand variety if the cost to differentiate inputs is negligible.horizontal differentiation, vertical agreements, successive Cournot oligopolies

Market games and successive oligopolies

This paper first introduces an approach relying on market games to examine how successive oligopolies do operate between downstream and upstream markets. This approach is then compared with the traditional analysis of oligopolistic interaction in successive markets. The market outcomes resulting from the two approaches are analysed under different technological regimes, decreasing vs constant returns.successive oligopolies, market games, entry, double marginalization

Colluding through Suppliers

In a dynamic game between N retailers and a large number of suppliers, I show that inefficient contracting emerges as a mechanism to implement collusion among retailers, building on the natural ‘complementarity’ between retail and wholesale prices. When efficient collusion is not sustainable, this complementarity allows retailers to rely on inefficient input supply, entailing double marginalization and negative franchise fees, to squeeze the wedge between collusive and deviation profits. I also study the role of communication on the equilibrium outcomes of games where retailers have the initiative. It turns out that communication is indeed fundamental to strengthen cartels' sustainability, although generating efficiency losses.Bertrand competition, double marginalization, collusion, competing hierarchies.

Externalities of national pharmaceutical policy when markets are integrated through parallel trade

This paper studies externalities of nationally determined cost-sharing systems, in particular coinsurance rates (patients pay a percentage of the price), under pharmaceutical parallel trade, i.e. trade outside the manufacturer's authorized distribution channel, in a two-country model with a vertical distributor relationship. Parallel trade generates a price-decreasing competition effect in the destination country and a price-increasing double marginalization effect in the source country. An increase of the coinsurance rates in the destination country of the parallel import mitigates the double marginalization effect in the source country. An increase of the coinsurance rate in the source country reinforces the competition effect in the destination country

Vertical Mergers and the MFN Thicket in Television

Increasingly, cable and satellite TV services (known as “MVPDs”) seek to acquire upstream programming creators, as illustrated by AT&T’s recent merger with Time-Warner. At the same time, the pay-TV industry is rife with “most-favored nation” (MFN) agreements, which can sharply constrict the competitive process. The most problematic variety, so-called “unconditional” MFNs, raise serious antitrust concerns, as they may forestall effective entry by new streaming-based platforms; penalize pro-competitive deviations from the status quo; and facilitate de facto coordination among integrated MVPDs.While vertical mergers in the industry have received significant antitrust attention, the MFN concerns are interrelated. Problematic MFNs may naturally induce a double marginalization problem, even if the parties are otherwise capable of contracting around it. This creates a strong motivation for integration, but it also raises a question as to whether a merger is the only way to avoid double marginalization. Further, MFNs might compel a problematic form of reciprocal dealing that generates de facto price fixing between integrated rivals. Consequently, the industry’s trend toward integration may trigger other kinds of anti-competitive conduct

Successive Monopolies with Endogenous Quality

This paper analyzes the impact of vertical integration on product quality. Contrary to previous findings, it is shown that integration decreases quality in many natural situations. In general, the direction of the quality change is governed by three effects that are isolated in the model. This separation allows an analysis of important special cases like the manufacturer/retailer relationship, the intermediate/final good producer relationship, the deregulation of network infrastructure, and the provision of promotional services through independent distributors.Vertical integration, double marginalization, quality

How to Regulate Vertical Market Structure in Network Industries

This paper analyzes the equilibrium outcomes in a network industry under different vertical market structures. In this industry, an upstream monopolist operates a network used as an input to produce horizontally differentiated final products that are imperfect substitutes. Three potential drawbacks of market structure regulation are analyzed: (i) double marginalization, (ii) underinvestment, and (iii) vertical foreclosure. We explore the conditions under which these effects emerge and discuss when the breakup of an integrated network monopolist is adequate.access pricing, investment, vertical foreclosure

Business Groups in Emerging Markets - Substitutes for Missing Institutions

Abstract: Business groups in emerging markets perform better than unaffiliated firms. We study how business groups can substitute some functions of missing institutions, for example, enforcing contracts. In a two period model, there is no contract enforcement in the first period. The firms within the business group are connected to each other by a vertical production structure, resulting in externalities due to double marginalization, and an internal capital market. Our model derives the sequencing of investments and the credit contract offered by the headquarters that solve the ex post moral hazard problem. Thus, the business group's organizational mode and the financial structure facilitate relational contracting