Apple doesn’t have an exclusive agreement with Amazon for online sales.
I agree though bidding on a trademark where you can advertise as a competitor when someone explicitly searches for a brand should be considered copyright infringement.
It’s definitely a horrible user experience - Apple, Google, and Amazon all do it
Apple does it in the app store. At least for me, search for any app by name, the top 1 or 2 results is never the app who's name I typed in exactly.
Just searched for "Netflix". First result is some app called "Chewy" (with [ad]) next to it. Search for "GitHub". First result is some app called "ServerCat". Search for "Grand Theft Auto". First result is some app call "One State RP". Search for "23andMe". First result is for "BodyFast: ..."