關鍵要素獨占廠商的垂直分割與產業公平競爭的福利分析

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Title:	關鍵要素獨占廠商的垂直分割與產業公平競爭的福利分析 Key Factor Monopolist and Vertical Disintegration:A Welfare Analysis
Authors:	郭平欣張瑞雲
Contributors:	經濟系
Keywords:	關鍵要素異質性消費者市場封殺垂直分割 Key factor Heterogeneous consumers Market foreclosure Vertical disintegration
Date:	2006-04
Issue Date:	2016-10-25 14:49:45 (UTC+8)
Abstract:	本文主要是探討掌握關鍵要素的既存廠商，在面對一群偏好為異質性消費者，以及提供要素給生產水平差異產品的下游競爭廠商時，是否會對下游競爭者採取市場封殺的議題。再者，為了避免產業的不公平競爭，本文更進一步從社會福利的觀點，分析政府是否應介入，將該既存廠商強制分割為上、下游獨立的兩家廠商的問題。本文主要結論是：當市場為完全覆蓋時，既存廠商會對下游競爭者採取市場封殺的策略。另外，政府是否須將該既存廠商強制分割為上、下游獨立的兩家廠商以達到社會福利最大，必須根據產品價值、生產成本與偏離消費者最偏好產品屬性之單位效用損失大小而定。 This article studies the market structure in which a monopolist upstream has control over the key factors of production but competes in Hotelling-type differentiated products downstream. A two-stage game theoretic model is set up to explain the optimal strategy for vertically-integrated leading firm. In addition, this study analyses the welfare effects of the regulator’s vertical disintegration policy and shows that the policy improves social welfare only if the niche of product differentiation has been exhausted.
Relation:	公平交易季刊 14:2 民95.04 頁39-70
Appears in Collections:	[Department of Economics & Graduate Institute of Economics ] journal articles

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