Advertising Role of Recommender Systems in Electronic Marketplaces: A Boon or a Bane for Competing Sellers?

44 Pages Posted: 9 Sep 2016

See all articles by lusi li

lusi li

University of Texas at Dallas - Department of Information Systems & Operations Management

Jianqing Chen

The University of Texas at Dallas, Jindal School of Management

Srinivasan Raghunathan

University of Texas at Dallas - Naveen Jindal School of Management

Date Written: June 6, 2016

Abstract

Recommender systems have become the cornerstone of electronic marketplaces that sell products from competing sellers. Similar to traditional advertising, recommender systems can introduce consumers to new products and increase the market size which benefits sellers. The informative role of recommender systems in electronic marketplaces seems attractive to sellers because sellers do not pay the marketplaces for receiving recommendations. We show that in a marketplace that deploys a recommender system helping consumers discover the product that provides them the highest expected net utility, the sellers do not necessarily benefit from the “free” exposure provided by the recommender system. The impacts of the recommender system are the result of a subtle interaction between advertising effect and competition effect. The advertising effect causes sellers to advertise less on their own and the competition effect causes them to decrease prices in the presence of a recommender system. Essentially, sellers “pay” in the form of more intense price competition because of the recommender system. Furthermore, the competition effect is exacerbated by the advertising effect because the recommender system alters a seller's own strategies related to advertising intensity and price from being strategic substitutes in the absence of the recommender system to being strategic complements in the presence of the recommender system. As a result of these two effects, we find that sellers are more likely to benefit from the recommender system only when it has a high precision. The results do not change qualitatively whether sellers use targeted advertising or uniform advertising. However, we find that a recommender system that benefits sellers when sellers do not employ targeted advertising may actually hurt sellers when sellers adopt targeted advertising with a high precision. On the other hand, in the electronic marketplace with the recommender system, an increase in sellers' targeting precision beyond a threshold softens price competition, increases seller profits, and reduces consumer surplus.

Keywords: Recommender systems, advertising, competition, e-commerce

Suggested Citation

li, lusi and Chen, Jianqing and Raghunathan, Srinivasan, Advertising Role of Recommender Systems in Electronic Marketplaces: A Boon or a Bane for Competing Sellers? (June 6, 2016). Available at SSRN: https://ssrn.com/abstract=2835349 or http://dx.doi.org/10.2139/ssrn.2835349

Lusi Li

University of Texas at Dallas - Department of Information Systems & Operations Management ( email )

P.O. Box 830688
Richardson, TX 75083-0688
United States

Jianqing Chen (Contact Author)

The University of Texas at Dallas, Jindal School of Management ( email )

800 West Campbell Road
Richardson, TX 75080
United States

Srinivasan Raghunathan

University of Texas at Dallas - Naveen Jindal School of Management ( email )

P.O. Box 830688
Richardson, TX 75083-0688
United States

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