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dc.contributor.authorKeppler, Jan-Horst*
dc.date.accessioned2012-03-16T14:12:49Z
dc.date.available2012-03-16T14:12:49Z
dc.date.issued2009
dc.identifier.urihttps://basepub.dauphine.fr/handle/123456789/8524
dc.language.isoenen
dc.subjectEntryen
dc.subjectFirmen
dc.subjectProductionen
dc.subjectFirmsen
dc.subject.ddc338en
dc.subject.classificationjelB21en
dc.subject.classificationjelD21en
dc.subject.classificationjelL11en
dc.subject.classificationjelL51en
dc.titleBarriers to Entryn : Abolishing the Barriers to Understandingen
dc.typeArticle accepté pour publication ou publié
dc.description.abstractenThe concept of a barrier to entry has been discussed least since Bain [1956] with important contributions by Spence [1977], Dixit [1980] and Milgrom-Roberts [1982]. The more recent discussion is synthesized in the contributions to a dedicated session at the 2004 AEA meeting. Yet, a 'barrier to entry' remains a surprisingly elusive concept, which even accomplished theorists fail to define in an unequivocal manner. This article shows that past and current contributions to the subject fail to resolve the issue, because they insist on analyzing barriers to entry in the context of identical firms in homogenous goods industries. This inevitably leads to logical inconsistencies as each theorist provides his own ad hoc definition of a barrier to avoid Bertrand competition. We show that the notion of a barrier to entry has economic pertinence only if interpreted as a fully sunk cost in the form of a unique, indivisible, non tradable factor of production. This, however, implies monopolistic competition with welfare implications of a barrier to entry being positive as well as negative. Regulators thus need to ensure the ability of all competitors to create their own welfare-enhancing 'barriers to entry' in a dynamic context rather than to focus on their existence in purely negative and static terms.en
dc.relation.isversionofjnlnameEconomia delle Scelte Pubbliche
dc.relation.isversionofjnlvol27en
dc.relation.isversionofjnlissue2-3en
dc.relation.isversionofjnldate2009
dc.relation.isversionofjnlpages90-124en
dc.description.sponsorshipprivateouien
dc.relation.isversionofjnlpublisherGianninien
dc.subject.ddclabelEconomie industrielleen
hal.person.labIds*


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