Gatekeepers use recommendation algorithms to force personalized pricing adoption

This research quantifies how gatekeeper platforms endogenously design the competitive environment to serve their specific revenue models. For streaming services and marketplaces, it suggests that neutral recommendations are often mathematically tuned to force adoption of high-margin pricing tools. As B2B platforms increasingly act as pricing middlemen, the immediate implication is a structural squeeze on vendor margins and consumer surplus. In the broader ecosystem, this shifts the antitrust focus from simple self-preferencing to the more complex manipulation of demand distributions. Watch for regulators to expand the Digital Markets Act (DMA) to specifically audit how recommendation rankings correlate with a platform’s own monetization tools.

The findings align with intensifying regulatory pressure on the 'pricing middleman' ecosystem. Per the Federal Trade Commission (FTC), July 2024, the agency launched a formal investigation into 'surveillance pricing' to determine how intermediaries use consumer data to facilitate individualized price discrimination. This 6(b) study specifically targets firms developing technologies that enable businesses to set prices based on browsing history, location, and willingness to pay, citing concerns that these opaque systems stifle price competition. Relatedly, Amazon’s pricing practices have faced sustained legal scrutiny. Per an unsealed opinion in the FTC v. Amazon case, October 2024, a federal judge allowed claims to proceed regarding 'Project Nessie,' a secret algorithm allegedly used to inflate prices by predicting rival responses. The FTC asserts this tool generated over $1 billion in excess profits by creating feedback loops that ratcheted up costs across the market. While Amazon argues such algorithms are discontinued or benign, the court’s ruling marks a precedent that systematic tracking of rivals via algorithms can violate the Sherman Antitrust Act even without explicit collusion. In the European Union, the Digital Markets Act (DMA) continues to expand its reach over these gatekeepers. Per the European Commission, May 2026, recent review reports have weighed whether to broaden DMA obligations to include AI-driven recommendation and cloud computing services. As of November 2025, formal proceedings were opened against Alphabet regarding the demotion of publisher content in search results, illustrating how algorithmic ranking is now viewed as a primary tool for controlling market contestability and fairness.