Update: Amazon v. Perplexity
On March 10, U.S. District Judge Maxine Chesney granted Amazon a preliminary injunction blocking Perplexity AI from using its Comet browser agent to access Amazon’s website with account-holder credentials. Though it hasn’t attracted much mainstream attention, this may prove to be one of the most significant AI-related legal cases to date—particularly in defining the boundaries of “agentic AI.”
A major promise of AI agents lies in their ability to comparison shop, find favorable terms, and even initiate transactions on behalf of users. However, platforms like Amazon—along with other large retail sites—do not benefit from this type of automated competition. They prefer maintaining direct control of customer interactions during the shopping experience.
At the heart of the case is a critical legal question: can Amazon treat AI agents as “trespassers” even when those agents act with a user’s consent and credentials?
A generation ago, early Internet pioneers envisioned a marketplace that would empower small retailers. Instead, giants like Amazon now dominate through the “walled gardens” they control. Today, technologists are again promising a more consumer-empowering digital era through agentic AI—but cases like this will determine whether those promises materialize, or whether the current online power structure remains intact.