Amazon made the marketplace. Then it charged sellers to be seen inside it.

Amazon won shoppers with selection, low prices, rapid delivery and a familiar checkout. It gave third-party sellers access to an enormous audience. That two-sided bargain becomes fragile when the company controlling the marketplace can charge both sides, decide how products are ranked and sell the most visible positions inside the search results.

The FTC and state partners allege that Amazon used interlocking anticompetitive strategies to maintain monopoly power. Its public complaint says Amazon charges sellers referral, fulfilment and advertising fees, and alleges that advertisements became a necessary cost of doing business because paid products were far more likely to be clicked. These are allegations in a pending case, not findings of a court.

Search becomes a toll road

Sponsored placement is not inherently deceptive when it is clearly labelled. The harder problem is structural: a seller may need to buy visibility because the operator controls the customer relationship and the ranking system. The fee then becomes part of the product price, even if it never appears on the shopper’s receipt as an Amazon charge.

A fair marketplace needs meaningful ad labels, usable organic discovery, transparent seller terms and a route for customers and sellers to take their data and reputation elsewhere. Otherwise the marketplace can squeeze its sellers without losing the shoppers they were brought in to serve.