Historically South Africa has favoured incumbents/national champions over rivalry (competition) in the telecommunications sector. However, the importance of competition has become more apparent with each new development in the sector. Given the changes in this dynamic sector it is important to...

This paper examines the barriers to entry and expansion of competitor airlines in South Africa. The exit of 1Time from the market as well as the experience of FlySafair, a recent entrant, are used to draw lessons about competitive conditions and constraints that new airlines face in the market....

We study platforms competing in commissions on revenues of sellers engaged in monopolistic competition, as the app providers on the app stores of iPhones and Android devices. Free entry of sellers on each platform generates multihoming superstars and a long tail of singlehoming sellers....

Under the context of a dynamic oligopoly model of entry and exit with two firms, we analytically derive a set of sufficient conditions for deterrence-motivated entry. In particular, the conceptual framework we present yields a set of testable hypotheses that can be conducted using inferred...

I study a merger between producers of complement inputs facing entry of superior inputs, with investment by the incumbents in deterministic cost reduction and by the entrants in probabilistic innovation, and competition in prices. The merger is profitable by solving Cournot complementarity...

There has been considerable consolidation in the hospital industry in recent years. Over 900 deals occurred from 1994-2000, and many local markets, even in large urban areas, have been reduced to monopolies, duopolies, or triopolies. This surge in consolidation has led to concern about...

We consider separately strategic entry and asymmetric information in the design of the settlement policy governing patent disputes, with a focus on Shapiro(2003)'s consumer protection rule. We show that, when a potential entrant strategically incurs an entry cost before engaging in a patent...

The purpose of this paper is to represent in which way a stable and no negligible growth in demand can affect the level of sustainability of collusion. For the European Commission this assumption is seen as a factor that disincentives collusion and pushes to a competitive behavior. This fact...

We combine a structural model with cross-sectional micro data to identify the causes andconsequences of rising concentration in the US economy. Using asset prices and industrydata, we estimate realized and anticipated shocks that drive entry and concentration. Wevalidate our approach by showing...

I analyze cliff discounts when an incumbent monopolist faces competition from a competitor that can compete for a portion (but not all) of the market, and compare them with both simple pricing and pricing formulas in which the incumbent can cut prices just in the competitive portion of the...