A standard result in oligopoly models is that the more efficient firms have larger market shares. The main question being answered in this paper is: 'if a firm increases (decreases) its relative efficiency does it increase (decrease) its market share?'. We show that, in two widely used models...

This article develops a model, based on switching costs and technological uncertainty, which explains some aspects of the price dynamics of e-commerce. Switching costs and intertemporal cost correlation lock-in consumers. Firms initially charge low prices to build a customer base. If firms fail...