Endogenous Product Design: A Linear Demand Approach

Afonso Rodrigues

Papers from arXiv.org

Abstract: This paper develops a linear-demand framework to investigate endogenous product design. The key assumption is that the same product characteristics which drive goods utility also (at least partially) shape competitive interactions across products. I model this relationship allowing for differences in each characteristic's relevance to competition, their absolute intensity per good, and correlations to other characteristics. The framework is novel in its broad applicability to settings with any finite number of goods, firms, and attributes, allowing for both vertical and horizontal differentiation, all in an empirically testable model. Under Bertrand price competition I show that across different market structures, a pattern emerges: product differentiation along product attributes that firms control is primarily vertical, with horizontal differentiation only in latent attributes. Counter to standard intuition, simulations show that allowing for endogenous design can imply higher consumer surplus under monopoly than under competition, as monopoly's stronger incentives for attribute investment translate into higher effective quality.

Date: 2026-02
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Persistent link: https://EconPapers.repec.org/RePEc:arx:papers:2602.02833

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