Preferences and Equilibrium in Monopoly and Duopoly
This paper takes the new approach of using a copula to characterize consumer preferences in a discrete choice model of product differentiation, and applies it to the economics of monopoly and duopoly. The comparative statics of demand strength and preference diversity, both properties of the marginal distribution of values for each product variety, are strikingly similar across market structures. Preference dependence, a property of the copula and an indicator of product differentiation, is a key determinant of whether prices are higher in multiproduct industries compared to single-product monopoly. Furthermore, the effects of preference on prices and profits influence equilibrium product selection. Remarkably, a horizontally-differentiated duopoly sometimes can foreclose a higher-quality monopoly to the detriment of consumer and social welfare.
|Date of creation:||2009|
|Date of revision:|
|Contact details of provider:|| Postal: |
Phone: (212) 854-3680
Fax: (212) 854-8059
Web page: http://www.econ.columbia.edu/
More information through EDIRC
When requesting a correction, please mention this item's handle: RePEc:clu:wpaper:0910-03. See general information about how to correct material in RePEc.
For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: (Discussion Paper Coordinator)
If references are entirely missing, you can add them using this form.