Endogenous Horizontal Product Differentiation under Bertrand and Cournot Competition: Revisiting the Bertrand Paradox

James Brander and Barbara J. Spencer

No 20966, NBER Working Papers from National Bureau of Economic Research, Inc

Abstract: This paper provides a new and simple model of endogenous horizontal product differentiation based on a standard demand structure derived from quadratic utility. One objective of the paper is to explain the “empirical Bertrand paradox” – the failure to observe homogeneous product Bertrand oligopoly, while homogeneous product Cournot oligopoly has significant empirical relevance. In our model firms invest in product differentiation if differentiation investments are sufficiently effective (i.e. if differentiation is not too costly). The threshold level of differentiation effectiveness needed to induce such investments is an order of magnitude less for Bertrand firms than for Cournot firms. Thus there is a wide range over which Bertrand firms differentiate their products but Cournot firms do not. If Cournot firms do choose to differentiate their products, corresponding Bertrand firms always differentiate more. We also establish the important insight that if product differentiation is endogenous Bertrand firms may charge higher prices and earn higher profits than corresponding Cournot firms, in contrast to the general presumption that Bertrand behavior is more competitive than Cournot behavior. Interestingly, consumer surplus increases with differentiation in the Cournot model but, due to sharply increasing prices, decreases with differentiation in the Bertrand model.

JEL-codes: D4 L1 L13 (search for similar items in EconPapers)
Date: 2015-02
New Economics Papers: this item is included in nep-bec, nep-com and nep-mfd
Note: IO
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (11)

Downloads: (external link)
http://www.nber.org/papers/w20966.pdf (application/pdf)

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:nbr:nberwo:20966

Ordering information: This working paper can be ordered from
http://www.nber.org/papers/w20966

Access Statistics for this paper

More papers in NBER Working Papers from National Bureau of Economic Research, Inc National Bureau of Economic Research, 1050 Massachusetts Avenue Cambridge, MA 02138, U.S.A.. Contact information at EDIRC.
Bibliographic data for series maintained by (wpc@nber.org).