Evidence of domination Both the Competition Commission and Icasa found, in their inquiries, that Vodacom and MTN are dominant across the supply chain. Their dominance is even more entrenched by the spectrum-sharing deals that they have entered into with Cell C, Liquid Intelligent Technologies and Rain. Cell C is wholly reliant on MTN and Vodacom to provide mobile services, and Liquid and Rain are disincentivised from competing aggressively in the mobile market due to the lucrative deals they have struck to provide capacity to either Vodacom or MTN, or both. This has limited their ability to compete independently - leaving Telkom as the only entity in the position to be able to challenge the "cosy" market structure head-on. The behaviour of the companies in the extract is in line with which of the following economic schools of thought?

(a) The Free Market School

b) Marxist Economics

c) Socialist Economics

d) A Planned Economy