Fixed to mobile substitution is a trend that is reshaping the telecommunications industry. Telkom's response to this trend, for example, has been to build a mobile network to recapture revenues lost to mobile operators. The question is, to what extent are fixed and mobile networks substitutes,...

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...