The agentic interface as the new competitive battleground

by Miguel Lucas

Your brand can have the best price, the best product, and the best reputation. And still, the AI agent deciding for your customer may never consider it. How do you compete for a decision you cannot even see?

The history of digital commerce is the history of who controls the point of decision. Amazon controlled the digital shelf: in its 2014 standoff with Hachette, it slowed deliveries and redirected shoppers toward its own titles until it forced better commercial terms 1. Google controlled the index, amassing more than 90% of global searches, until a federal court ruled in 2024 that this control constituted an illegal monopoly 2. Now a third layer is taking hold, conversational synthesis: 85% of brand mentions in AI responses come from third-party domains, not from the brand itself; according to Profound, based on 27 million citations analyzed, only 4% originate on corporate websites 3.

And a fourth layer is already opening up: action. McKinsey estimates that global agentic commerce will reach between $3 trillion and $5 trillion by 2030 4. Gartner predicts that 90% of B2B purchases will be executed through AI agents by 2028 5. During Cyber Week 2025 alone, agents influenced $67 billion in sales, 20% of all transactions 6. Brands are no longer competing to appear on a screen. They are competing to become the variable an algorithm executes without ever showing it to you.

If a human salesperson decided what to buy on your behalf without telling you what criteria they used or who pays them a commission, we would call it a conflict of interest. When an AI agent paid by the merchant does it, we call it personalization. An April 2026 study found that Grok 4.1 Fast prioritized a more expensive, inferior sponsored product in 83% of tests; GPT 5.1 disrupted the natural purchase flow to push sponsored options in 94% of cases. Since January 2026, the FTC has required “Double Disclosure” —the commercial relationship and the use of AI— with fines of $53,088 per violation 7. The law reacts. But it reacts after the agent has already decided.

For decades, we built brand trust through relationships, reputation, and earned media. None of those levers works with an agent that has no relationship with you, only decision criteria you neither control nor audit.

The question is no longer how to enter the conversation with your customer. It is whether you will have any chance to be part of the conversation that decides for them. Who audits the agent buying on your behalf?

Related theses

References

  1. The New York Times — Amazon-Hachette Dispute (2014)
  2. U.S. Department of Justice — Ruling in U.S. v. Google (August 2024)
  3. Profound — State of AI Search (2026)
  4. McKinsey & Company — Global agentic commerce forecast for 2030
  5. Gartner — AI agent adoption forecast for B2B purchasing by 2028
  6. Adobe — Cyber Week 2025 data
  7. Federal Trade Commission — Double Disclosure requirement (January 2026)