What changed
Reuters: AI agents could weaken Amazon and Walmart ad pricing; analysts expect discounts and multiyear deals
When
Reported November 4, 2026; Walmart agent rules announced October 21, 2026
Who it affects
Amazon, Walmart, Emarketer, Morgan Stanley, Footprints AI, Morningstar, Flywheel
What to do
Fix product data, watch ad pricing, avoid long ad commitments without exit terms

Key takeaways

  • Reuters says AI agents could weaken pricing on the $74.4B US retail media market Amazon and Walmart dominate.
  • Analysts expect discounts and multiyear deals; Amazon says agents have no meaningful ad effect yet.
  • Fix product data, price parity and delivery promises, and avoid long ad commitments without exit terms.

How agent shopping reached retail media

  1. Morgan Stanley: agents 10% to 20% of ecommerce by 2030

  2. Appeals court lifts ban on Perplexity Comet

  3. Amazon bans Meta's Muse agent

  4. Walmart announces Agent Profiles and Gateway

  5. Reuters: analysts expect ad discounts

What Reuters reported

Reuters framed AI led shopping as a conundrum for Walmart and Amazon: both want agents to buy on their sites, but sponsored listings are sold on the assumption that a person sees them. Emarketer projects US retail media spending of about $74.4 billion in 2026, up 22.6% from $60.7 billion last year, with Amazon and Walmart holding a combined 88% share. Morgan Stanley researchers said in July that agents could account for 10% to 20% of US ecommerce spending by 2030.

Amazon's own numbers show the backdrop. Reuters, citing LSEG data, said Amazon's third quarter ad revenue grew 11%, its slowest pace in nearly four years; ExchangeWire put growth at 12% on almost $20 billion and noted Amazon guided to high teens growth in the fourth quarter, so the sources round differently. Reuters said chief executive Andy Jassy told analysts there is no meaningful effect yet on Amazon ads from third party agents.

US retail media in 2026

$74.4BProjected US spend
+22.6%Growth from $60.7B
88%Amazon and Walmart share
Source: Emarketer via Reuters, Nov 4, 2026

What analysts expect for ad prices

Dan Marc, chief executive of retail media platform Footprints AI, told Reuters he expects Amazon and Walmart to sign their largest advertisers to multiyear deals to lock in revenue, and to offer more discounts on digital retail media ads as shoppers turn to chatbots. Not everyone sees a cliff. Morningstar analyst Brett Husslein called it "an evolution rather than an existential threat", and Flywheel's Amie Owen said the firm is not advising clients to shift retail media budgets overnight.

Amazon and Walmart are taking opposite paths

Amazon banned Meta's Muse agent from its store in September, saying it accessed the site without authorization, and is still fighting Perplexity's Comet agent after an appeals court overturned an earlier ban in August. Walmart went the other way. On October 21, 2026 it announced Agent Profiles that let shoppers authorize an agent and set spending limits such as $50, $100 or $200, an Agent Gateway built on the Model Context Protocol in limited beta, and terms that block agents from seeing card details. Digital Commerce 360 reported Walmart plans to launch Agent Profiles within a month and that agents will see the same prices a human sees.

Both retailers are also putting ads inside their own assistants: Reuters noted Walmart is testing ads in Sparky and Amazon runs ads in Alexa for Shopping. Walmart marketplace chief Manish Joneja said accurate product information, competitive prices, availability and reliable delivery promises will matter more when agents choose products.

So what: the plain math for a brand

The risk is not that ad budgets vanish next quarter. It is that a slice of sales stops passing through sponsored placements, and the ad you pay for stops being what wins the order.

For example, with illustrative numbers: a brand sells $200,000 a month on Amazon and 40% of those sales, $80,000, are attributed to ads. If 10% of its shoppers start buying through agents, the low end of Morgan Stanley's 2030 range used here only as a scenario, $20,000 of monthly sales moves to a channel where ranking depends on product data, price, reviews and delivery speed. About $8,000 of that was ad driven. Those sales are not lost if the listing is the one an agent picks, but the brand cannot buy them with a higher bid. If retailers discount ad prices to hold advertisers, the same budget buys more human traffic.

What sellers should do

These steps fit brands spending on Amazon Ads or Walmart Connect going into the holiday quarter.

  • Catalog manager: fill every attribute, size, material and use case field on Amazon and Walmart, since agents read structured data. Our Amazon Rufus optimization guide covers the fields AI assistants rely on. Metric: listing completeness score and attribute errors in Seller Central and Seller Center.
  • Pricing lead: keep prices consistent across channels, because agents compare price first and Walmart says agents see the same price as people. Metric: number of SKUs priced above your own site or other marketplaces.
  • Ads manager: track cost per click and CPM monthly on Amazon and Walmart for signs of discounting, and move budget to the cheaper placement that still converts. Metric: CPC and ROAS by placement versus last year.
  • Brand owner: do not sign multiyear retail media commitments without exit or rate review terms. A retail media agency can compare offers. Metric: share of budget locked beyond 12 months.
  • Operations lead: protect delivery promises and in stock rates on hero products, which Walmart named as agent ranking factors. Metric: in stock rate and on time delivery for top 20 SKUs.
  • Growth lead: test your own agent readiness with an AI agents for ecommerce review, and get a free Amazon audit of wasted ad spend. Metric: wasted spend share and branded search trend.

Agent ready ad plan

  • Complete every listing attribute
  • Hold price parity across channels
  • Track CPC and CPM monthly
  • No multiyear deals without exit terms
  • Protect in stock and delivery promises

When this does not apply

Agent shopping is still small, and Jassy says it has not hit Amazon ads yet. Brands in categories where shoppers browse for style, such as fashion or decor, rely more on visual discovery and may see slower change than replenishment items like supplements, which Walmart said were top sellers through ChatGPT. The 10% to 20% figure is a 2030 forecast, not a current measure, so do not cut ads that are profitable today. Follow updates on the retail media news channel.

Sources

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