Quality competition and entry deterrence: When to launch an extra brand

In this paper, we study the rational for an incumbent to launch a second brand when facing potential entry in a market with quality differentiated products and a fringe producer. Depending on market size, costs for a second brand and a potential entrant's setup cost the incumbent might use a second brand both when deterring and when accommodating entry. The analysis generates predictions about the equilibrium degree of product differentiation, the presence of a multiproduct incumbent, and the determinants of successful entry.