Amazon owns both the product and the platform. They often are involved in the delivery of the products as well. This gives them quite a bit of control over other companies selling on their platform. They can push whatever product they like to the top of the page. They can copy other products and push the original to the last page of results, and then drop their price until the other company can’t compete, and then raise their prices.

They have a lot of control which allows them to be anti competitive. And allegedly they use that