Breaking news! Amazon restricts these sellers from advertising

Foreign media said that although Amazon allows some device manufacturers to buy advertisements related to other competitors' products on Amazon's website, the company will not allow some device manufacturers to buy advertisements related to Amazon's own products, including the voice assistant Echo Show, Ring Doorbell and Fire TV.

The investigation also found that Roku, which competes with Amazon's Fire TV, has been unable to buy ads related to Amazon's devices and its own products for several years. Foreign media said that Roku search results on Amazon's website often show ads for Roku competitors, Roku products offered by dealers, and promotional ads for Amazon's Fire TV at the top of the search results.

Foreign media found that members of Amazon's device team marked the products of larger competitors (called "first-tier competitors") to prevent them from purchasing ads related to Amazon's own products. In addition, when Amazon's device team launched a new product, employees were responsible for deciding which keywords to ban in ads and were told to discuss these issues in emails marked "privileged and confidential" to prevent regulators from accessing the relevant emails.