⚠ The Supplier on the Next Facing Also Buys the AdvertisingModerate threat

Walmart (WMT) — threat to the moat

Walmart squeezes the wholesale price, takes share with own-label, and charges for visibility on top — and only one of those can grow at forty per cent forever.

Walmart's private brands are a weapon aimed at its suppliers. Walmart's fastest-growing profit line is money those same suppliers pay it. Those two facts are in tension, and the tension is getting sharper as the advertising business grows.

Growth rates, June 2026 quarter (%)+38%Global advertising+52%Marketplace sales+17%Membership fees+5.9%Net salesFees charged to suppliers are growing at six to nine times the rate of the goods.
A fee growing at forty per cent a year cannot be funded indefinitely out of a supplier margin Walmart is simultaneously squeezing on the wholesale price.

The mechanics are worth stating. A branded manufacturer sells to Walmart at a negotiated wholesale price, then buys sponsored placement through Walmart Connect to be found on Walmart's shelf and website. Walmart takes a margin on the goods and close to a full margin on the advertising, and simultaneously competes with the same manufacturer through Great Value or Equate on the adjacent facing.

For as long as the supplier has no better route to the customer, that arrangement holds. It stops holding if Walmart pushes hard enough on both levers at once — squeezing the wholesale price, taking share with own-label, and charging for visibility on top — to make the relationship uneconomic. Suppliers respond by holding back innovation, by favouring rivals with new products, or by going direct.

There is a subtler risk too. Advertising revenue grew roughly 46% in fiscal 20261 and 38% in the June 2026 quarter2, far faster than the goods being advertised. Growth that fast in a fee charged to suppliers eventually has to come out of either their margin or the shelf price — and the shelf price is the one thing Walmart has promised not to raise.

Watch Walmart U.S. gross profit rate alongside advertising growth. If the gross rate climbs while prices are being cut, the suppliers are funding both, and there is a limit to how long they will.

References
  1. ReportedAdvertising revenue grew roughly 46% in fiscal 2026 and 38% in the June 2026 quarter, far faster than the goods being advertised.
    Marketing Dive - Walmart global advertising revenue of nearly $6.4 billion in fiscal 2026, up 46%, with Walmart Connect U.S. up 41% in the fourth quarter; advertising and membership fees accounted for about a third of fourth-quarter operating income — FY2026 · publ. 2026 · source ↗
  2. ReportedAdvertising revenue grew roughly 46% in fiscal 2026 and 38% in the June 2026 quarter, far faster than the goods being advertised.
    Walmart second-quarter fiscal 2027 earnings release (Form 8-K exhibit 99.1) - revenue $187.9 billion +5.9% and +5.1% in constant currency; operating income +28.8% and +17.4% adjusted in constant currency; global eCommerce +23%; global advertising +38% with Walmart Connect excluding VIZIO +43%; membership fee revenue +17%; gross profit rate +96 basis points and Walmart U.S. +158; Walmart U.S. comp sales +2.6% and operating income +20.6% with operating expenses deleveraged 72 basis points; Sam's Club operating income +44.3% and International +16.6%; ROA 8.0% and ROI 15.4%; free cash flow $5.5 billion; 42.3 million shares repurchased for $5.1 billion year to date; FY27 guidance of 4.0-5.0% net sales growth, 7.0-8.5% adjusted operating income growth and $2.80-$2.87 adjusted EPS — Q2 FY2027 · publ. August 20, 2026 · source ↗
Sources
Generated September 22, 2026