Horizontal Merger Analysis with Endogenous Product Range Choice

Erkal, Nisvan; Pan, Lijun

Horizontal Merger Analysis with Endogenous Product Range Choice

Erkal, Nisvan; Pan, Lijun

Institute of Social and Economic Research Discussion Papers, 2022, 1162, 1-45

アクセス数:62件（2025-05-21 14:08 集計）

固定URL: https://hdl.handle.net/11094/87620

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タイトル	Horizontal Merger Analysis with Endogenous Product Range Choice
著者	著者名 Erkal, Nisvan
著者	NRID 1000070784320 1000070784320 著者名 Pan, Lijun
キーワード等	Antitrust policy
	merger analysis
	multiproduct firms
	product range choice
	entry
	cost synergies
抄録	We consider mergers between multi-product firms in a market with monopolistically competitive fringe of single-product firms. Aggregate product variety is determined by product variety choices of multi-product firms and entry/exit decisions of single-product firms. Mergers can generate marginal cost synergies (affecting marginal cost of quantity) or fixed cost synergies (affecting marginal cost of variety). We show that with marginal cost synergies, consumer welfare decreases whenever aggregate variety increases following a merger. However, with fixed cost synergies, an increase in aggregate variety can indicate that the merger is beneficial. Our results also show high synergies do not necessarily improve consumer welfare.
出版者	The Institute of Social and Economic Research, Osaka University
収録物名	Institute of Social and Economic Research Discussion Papers
巻(号)	1162
ページ	1-45
刊行年月	2022-02
言語	英語
ハンドルURL	https://hdl.handle.net/11094/87620
PISSN	0473453X
eISSN	24350982
関連情報 (references)	URI https://www.iser.osaka-u.ac.jp/static/resources/docs/dp/2022/DP1162.pdf
アクセス権	metadata only access
カテゴリ	ディスカッション／ワーキング・ペーパー DP/WP
カテゴリ	Institute of Social and Economic Research Discussion Papers

資源タイプ	テクニカルレポート
ローカル資源タイプ	ディスカッション／ワーキング・ペーパー
DCMI資源タイプ	text
DCTERMS.bibliographicCitation	Institute of Social and Economic Research Discussion Papers. 2022, 1162, p. 1-45
DC.title	Horizontal Merger Analysis with Endogenous Product Range Choice
DC.creator	Erkal, Nisvan
DC.creator	Pan, Lijun
DC.publisher	The Institute of Social and Economic Research, Osaka University
DC.language' scheme='DCTERMS.RFC1766	英語
DC.type' scheme='DCTERMS.DCMIType	text
DCTERMS.issued' scheme='DCTERMS.W3CDTF	2022-02
DC.relation' scheme='DCTERMS.URI	https://www.iser.osaka-u.ac.jp/static/resources/docs/dp/2022/DP1162.pdf
DC.subject	Antitrust policy
	merger analysis
	multiproduct firms
	product range choice
	entry
	cost synergies
DCTERMS.abstract	We consider mergers between multi-product firms in a market with monopolistically competitive fringe of single-product firms. Aggregate product variety is determined by product variety choices of multi-product firms and entry/exit decisions of single-product firms. Mergers can generate marginal cost synergies (affecting marginal cost of quantity) or fixed cost synergies (affecting marginal cost of variety). We show that with marginal cost synergies, consumer welfare decreases whenever aggregate variety increases following a merger. However, with fixed cost synergies, an increase in aggregate variety can indicate that the merger is beneficial. Our results also show high synergies do not necessarily improve consumer welfare.
DC.format	87620
citation_title	Horizontal Merger Analysis with Endogenous Product Range Choice
citation_author	Erkal, Nisvan
citation_author	Pan, Lijun
citation_publisher	The Institute of Social and Economic Research, Osaka University
citation_language	英語
citation_date	2022-02
citation_journal_title	Institute of Social and Economic Research Discussion Papers
citation_volume	1162
citation_firstpage	1
citation_lastpage	45
citation_public_url	https://hdl.handle.net/11094/87620
citation_abstract_html_url	https://www.iser.osaka-u.ac.jp/static/resources/docs/dp/2022/DP1162.pdf

Horizontal Merger Analysis with Endogenous Product Range Choice

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