When the buyer is a machine: Why agentic commerce threatens the trillion-dollar advertising model

The global advertising industry crossed the one-trillion-dollar threshold in 2025. In that same year, a quieter milestone passed almost without notice: the first AI-agent-mediated programmatic advertising deal was executed during NFL playoff games, and OpenAI’s ChatGPT began processing purchases through Instant Checkout for merchants on Shopify, Walmart, and Target. These two milestones are not unrelated. […] The post When the buyer is a machine: Why agentic commerce threatens the trillion-dollar advertising model appeared first on e27.