Inquiry · 2026-09-16 · Investigativa — O que se sabe?Interpretation

Which actors gain bargaining power when AI agents become intermediaries between consumers and retailers?

Inquiry graph · signals → evidence → actors → claims → tensions → hypotheses → implicationshover an edge for its relation

Why it matters

Every previous intermediary layer, from search to marketplaces, captured margin from retailers. Agents combine discovery, comparison and purchase in one actor, with the consumer's trust attached.

Signals that triggered the inquiry

Verifiedtechnologytechnology deploymentobserved 2025-09-29published 2025-09

Consumer AI assistants add native checkout — then OpenAI retreats to discovery

OpenAI launched Instant Checkout in ChatGPT (US Etsy sellers first) on the Stripe-co-developed Agentic Commerce Protocol on 29 Sep 2025; Google announced UCP-powered checkout in AI Mode and Gemini on 11 Jan 2026. By 24 Mar 2026 OpenAI was deprioritising Instant Checkout in favour of product discovery and merchant-owned checkout. The assistant is becoming the shelf faster than it is becoming the till.

Sources3verified
  1. Stripe powers Instant Checkout in ChatGPT and releases Agentic Commerce Protocol codeveloped with OpenAI — Stripe, 2025-09-29
    The e-commerce traditional model was built for humans – now, we're beginning to optimize commerce for agents.
  2. New tech and tools for retailers to succeed in an agentic shopping era — Google (The Keyword), 2026-01-11
    UCP establishes a common language for agents and systems to operate together across consumer surfaces, businesses and payment providers.
  3. OpenAI's plans to make ChatGPT more like Amazon aren't going so well — TechCrunch, 2026-03-24 secondary
    The initial version of Instant Checkout did not offer the level of flexibility that we aspire to provide

Independent cross-check · · sonar-pro · live web search · 15 citations: partly consistent · Record

StrengthConfidenceImpactSourceOpenAI/Stripe Instant Checkout + ACP launch (2025-09-29); Google UCP announcement (2026-01-11); OpenAI pivot reported by TechCrunch (2026-03-24)
RetailUnited StatesGlobalConsumer AI assistantsNational retail groupsAgentic commerce protocols
supports Agentic commercetriggers inquiryMonitor this
Verifiedindustrytechnology deploymentobserved 2025-11-04published 2025-11

Amazon blocks AI agents and sues Perplexity while its ad business grows 26%

Amazon expanded robots.txt blocks on AI crawlers and agents (reported Aug 2025), sued Perplexity over its Comet shopping agent (Nov 2025, N.D. Cal.), won a preliminary injunction (9 Mar 2026) that the Ninth Circuit vacated on 4 Aug 2026. Meanwhile Amazon Ads grew 26% to $19.8bn in Q2 2026 and Amazon pushes its own agentic assistant (Rufus/Alexa+). Monetise attention, deny outside agents, build your own.

Sources4verified
  1. Amazon quietly blocks AI bots from Meta, Google, Huawei and more — Modern Retail, 2025-08-21 secondary
    Amazon is desperately trying to stop AI companies from training models on its data
  2. Amazon.com Services LLC v. Perplexity AI, Inc., 3:25-cv-09514 (N.D. Cal.) — CourtListener, 2025-11
    Amazon.com Services LLC v. Perplexity AI, Inc., 3:25-cv-09514 (docket caption; page returned 403, seen in search results)
  3. Ninth Circuit Rules on AI Agent 'Access' to Third-Party Websites Under CFAA — Cooley LLP, 2026-08-06 secondary
    it was the user who 'accessed' Amazon's computers, with the help of Perplexity's AI agent
  4. Amazon.com Announces Second Quarter Results (Exhibit 99.1) — Amazon.com, Inc. / SEC EDGAR, 2026-07-30
    an agentic AI shopping assistant that offers personalized recommendations, product comparisons, price history, and the ability to automate shopping through features like Price Alerts and Auto-Buy

Independent cross-check · · sonar-pro · live web search · 15 citations: partly consistent · Record

StrengthConfidenceImpactSourceModern Retail (robots.txt, 2025-08-21); Amazon v. Perplexity, 3:25-cv-09514 (N.D. Cal.); Ninth Circuit ruling 2026-08-04 (Cooley); Amazon Q2 2026 results (SEC Ex. 99.1)
RetailUnited StatesGlobalNational retail groupsConsumer AI assistantsAgentic commerce protocols
supports Agentic commercetriggers inquiryMonitor this

Evidence

EvidenceTypeClassDateQuality
Stripe powers Instant Checkout in ChatGPT and releases Agentic Commerce Protocol codeveloped with OpenAI — Stripe +2documenttechnology2025-09high
Amazon.com Services LLC v. Perplexity AI, Inc., 3:25-cv-09514 (N.D. Cal.) — Modern Retail +3documentindustry2025-11high

Claims

Published forecasts put agent-driven purchases at roughly 10–20% of US e-commerce by 2030 (Morgan Stanley) and up to $1 trillion of US B2C retail revenue orchestrated by agents by 2030 (McKinsey). The only 2028 forecast found is for B2B: Gartner expects 90% of B2B buying to be AI-agent intermediated by 2028.

polarity: supportsmodality: hypothetical1 evidencecontested by 1

Competing hypotheses

Hypothesis

Assistants capture referral margin comparable to marketplaces within three years.

Supported by

Challenged by

Hypothesis

Retailers deploy their own agents and negotiate agent-to-agent, keeping the customer relationship.

Supported by

Challenged by

Possible implications

  • Catalogue data quality becomes a strategic asset rather than an operational cost.
  • Retail media revenue is a defensive moat with an expiry date.
  • Brazilian payment rails may give local retailers leverage foreign assistants lack.

Open questions

  • Which Brazilian retailers have signed agent protocols?
  • How do consumers split trust between assistant and brand?

Open questions are what the inquiry does not yet know. They are the next collection targets.