We develop a model to analyze the social optimality of growth and product variety. The model contains two sectors, one assembly sector producing a homogeneous consumption good and one intermediate goods sector producing differentiated inputs. Growth results from R&D performed in the intermediate...

We introduce a model of oligopoly dynamic pricing where firms with limited capacity face a sales deadline. We establish conditions under which the equilibrium is unique and converges to a system of differential equations. Using unique and comprehensive pricing and bookings data for competing...

This paper extends the Hall-Roeger methodology in order to investigate the market structure and to measure the degree of market power in the Greek food and beverages manufacturing industry over the period 1984-2007 at the three-digit SIC level. The present paper also estimates the net and the...

Statistical agencies are faced with a difficult measurement problem when tax reforms change consumer prices. Such reforms can affect measures of inflation and hence measures of welfare. It is suggested that instead of attempting to adjust the consumer price index (CPI) afetr tax reform, it is...

We evaluate the social welfare loss (WL) that arises in an oligopolistic industry under technological competition and product differentiation. The main novelty of our approach concerns the decomposition of the WL into `dynamic' losses (from too little cost reduction and an inappropriate number...

Rules designed to regulate capital markets and protect investors often have spillover effects, either negative or positive, on stakeholders other than investors. These stakeholders can include managers, employees, consumers, taxpayers, gatekeepers, vendors, and others. This raises a question as...

We show that the entry of a second firm in a horizontally differentiated market (ala Hotelling) may harm consumers as prices increase and consumer's surplus possibly decrease. We first derive the price and the consumer's surplus of a monopoly which is located at the center of the market. When a...

Having exports from more than one Russian gas producer has been an important issue in the Russian–EU energy dialogue during the last decade. Nevertheless, in June 2006, Russian Federal law legalized the de facto export monopoly of Gazprom. Political and commercial interests have regularly...

Several recent papers argue that price matching policies raise equilibrium prices. We add to this literature by considering potential welfare losses, which have two sources: Harberger triangles from high prices and Posner rectangles from over-entry. We compare markets with price matching and...

We show that the entry of a second firm in a horizontally differentiated market (ala Hotelling) may harm consumers as prices increase and consumer's surplus possibly decrease. We first derive the price and the consumer's surplus of a monopoly which is located at the center of the market. When a...