EconPapers    
Economics at your fingertips  
 

Market Size and Competition: A "Hump-Shaped" Result

Iris Grant, Iris Kesternich (), Heiner Schumacher and Johannes Van Biesebroeck ()

No 14009, CEPR Discussion Papers from C.E.P.R. Discussion Papers

Abstract: An active empirical literature estimates entry threshold ratios, introduced by Bresnahan and Reiss (1991), to learn about the impact of firm entry on the strength of competition. These ratios measure the increase in minimum market size needed per firm to sustain one additional firm in the market. We show that there is no monotonic relationship between a change in the entry threshold ratio and a change in the strength of competition or in the price-cost margin. In the standard homogenous goods oligopoly model with linear or constant elasticity demand, the ratio is hump-shaped in the number of active firms, increasing at first and only when additional firms enter it gradually decreases and converges to one. Empirical applications should use caution and interpret changes in the entry threshold ratios as indicative of changes in competition only from the third entrant onwards.

Keywords: Competition; Entry Threshold Ratio; Market entry; market size (search for similar items in EconPapers)
JEL-codes: D43 L13 (search for similar items in EconPapers)
New Economics Papers: this item is included in nep-bec, nep-com, nep-ind and nep-mic
Date: 2019-09
References: View references in EconPapers View complete reference list from CitEc
Citations: Track citations by RSS feed

Downloads: (external link)
http://www.cepr.org/active/publications/discussion_papers/dp.php?dpno=14009 (application/pdf)
CEPR Discussion Papers are free to download for our researchers, subscribers and members. If you fall into one of these categories but have trouble downloading our papers, please contact us at subscribers@cepr.org

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:cpr:ceprdp:14009

Ordering information: This working paper can be ordered from
http://www.cepr.org/ ... rs/dp.php?dpno=14009

Access Statistics for this paper

More papers in CEPR Discussion Papers from C.E.P.R. Discussion Papers Centre for Economic Policy Research, 33 Great Sutton Street, London EC1V 0DX.
Bibliographic data for series maintained by ().

 
Page updated 2020-01-07
Handle: RePEc:cpr:ceprdp:14009