The User Asks, Platforms Compete: How Agentic Recommendation Markets Take Shape

• URL: http://arxiv.org/abs/2607.25253v2
• Date: Wed, 29 Jul 2026 12:04:58 GMT
• Title: The User Asks, Platforms Compete: How Agentic Recommendation Markets Take Shape
• Abstract summary: LLM-based user agents enable a different recommendation process.<n>A user specifies a need before choosing a platform.<n>We find this new setting of recommendation creates a tension between access and attention.
• Score: 42.08046748080711
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Online recommendation has traditionally taken place after a user enters a platform, which determines the candidate pool and the ranking shown to the user. LLM-based user agents enable a different recommendation process: a user specifies a need before choosing a platform, leaving platforms to compete for the user's attention, which we refer to as an agentic recommendation market. In our controlled LLM-based experiments across three product domains, we find this new setting of recommendation creates a tension between access and attention. Compared with traditional platform-centric recommendation, user-centric recommendation greatly expands the opportunity for relevant items to enter comparison; yet broader participation does not translate directly into effective exposure. Competition directly triggers platforms' strategic play: selectively positive explanations occupy 73--78% of first-ranked positions. When the user agent relates platforms' actions to subsequent user feedback, this share falls to 36--41%, while the chance of a user purchasing the relevant item increases. A user agent is therefore more than a ranker over a larger pool of candidates: its querying, ranking, and feedback mechanism governing who can compete, how scarce attention is allocated, and how earlier outcomes shape the evaluation of platforms directly affect user utility. Designing agentic recommendation therefore requires treating access, attention, and accountability as a joint mechanism design problem.

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