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Agentic trading is no longer a future concept—it has already begun. As AI agents start negotiating media transactions directly, the real question isn't whether RTB disappears, but how much of advertising shifts to a new hybrid model. What happens to DSPs, SSPs, agencies, and publishers when machines can negotiate outcomes? A look at the economics, incentives, and future of programmatic advertising.

Advertising is coming to AI, but it may not reshape the industry in the way many expect. In this article, Rio Longacre examines the fierce debate between skeptics, optimists, and purists, arguing that ads will become a significant revenue stream for AI platforms like OpenAI, Anthropic, and Gemini. The key insight: unlike Google Search, these companies already generate extraordinary subscription and enterprise revenue, making advertising highly valuable—but ultimately incremen

Who wins and who loses when media buying goes agentic? AdCP isn’t just a new protocol—it’s a shift in where media decisions happen. As allocation moves upstream from auctions to agent-driven negotiation, DSPs, SSPs, publishers, and agencies all face structural disruption. This isn’t about better automation. It’s about control—and a fundamental reshaping of how the market operates.

For fifteen years, advertising has revolved around real-time auctions. But as agentic AI and protocols like AdCP emerge, machines can now reason, remember, and negotiate—not just bid. This shift could move value upstream into continuously negotiated, agent-to-agent deals, relegating open exchanges to clearing remnant supply. The result: a market defined less by speed and auctions, and more by automated, machine-executed negotiation.