This paper contributes to the economics and econometrics literature on unilateral effects analysis. It introduces the Rotterdam demand system; considers the effect and importance of demand restrictions for minimizing the mean squared error of price simulations; demonstrates that approximate...

Rewheel, a Finnish consultancy, periodically issues reports that it portrays as international competitiveness comparisons of retail prices for mobile wireless services across the globe. However, these comparisons are not accurate representations of the state of competition in the mobile wireless...

The conventional wisdom is that indirect network effects, unlike direct network effects, do not give rise to externalities. In this paper we show that under very general conditions, indirect network effects lead to adoption externalities. In particular we show that in markets where consumption...

In this Paper we consider the economics of platform competition in telecommunications. Platform competition occurs when different, sometimes incompatible, technologies compete to provide telecommunications services to end-users. Battles between competing technologies have been an important...

Can indirect network effects lead to adoption externalities? If so, when? We show that in markets where consumption benefits arise from hardware/software systems, adoption externalities will occur when there are (i) increasing returns to scale in the production of software, (ii) free entry in...

In this paper we establish a complete characterization of the strategic interaction of firms in sequential entry models. The limit price plays an important coordinating role in non-cooperative sequential entry models. We show that for many firms in a large range of sequential entry equilibria,...

The conventional wisdom is that indirect network effects, unlike direct network effects, do not give rise to externalities. In this Paper we show that under very general conditions, indirect network effects lead to adoption externalities. In particular we show that in markets where consumption...