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Theses

Régulation de la dominance et délimitation des marchés pertinents: application au secteur des télécommunications tunisien

Abstract : Cette this thesis, which focuses on regulation of imperfect markets in the telecommunications domain, has three objectives: first, proposing a procedure for defining relevant markets, then designing a tool to measure dominance and finally, identifying the root causes that may underlie it. The traditional approach consists in analyzing the dominant entity and proposing regulatory measures to apply. This work proposes an alternative approach, where we promote the dominated entity (demand) and not the dominating one (supply). This change of perspective, aims at identifying determining factors of demand behavior - factors responsible for market domination-. The goal is to be able to propose regulatory measures to remedy this situation. Demand behaviour - particularly uses of substitution between means of interpersonal electronic communication - was apprehended through a survey carried out into a sample of 1500 people living in tunisia. A log-linear analysis applied to the uses showed that the latter depend on the contexts in which the choices are operated. An analysis of sequential associations of the behavioural choices, made it possible to propose four relevant markets: fixed network, the "public call boxes", the market of the mobile and the market of the sms. An analysis of distances between markets, as well as an analysis of the potential for dominance, highlighted people's willingness to be dominated. An analysis of factors underlying these practices of substitution showed the strong incidence of the cognitive factors on operators' potential for dominance and led us to propose regulatory measures which aim at reducing dominance by encouraging behavioural changes.
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https://pastel.archives-ouvertes.fr/pastel-00005767
Contributor : Ecole Télécom Paristech <>
Submitted on : Tuesday, February 2, 2010 - 8:00:00 AM
Last modification on : Friday, October 23, 2020 - 4:37:48 PM
Long-term archiving on: : Thursday, March 30, 2017 - 5:12:15 AM

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  • HAL Id : pastel-00005767, version 1

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Lilia Rebaï. Régulation de la dominance et délimitation des marchés pertinents: application au secteur des télécommunications tunisien. Sciences de l'Homme et Société. Télécom ParisTech, 2009. Français. ⟨pastel-00005767⟩

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