Amazon Music is hardly a huge player in the music field. Apple Music is #2 and by bundling it Apple is leveraging itself to an unfair advantage.
That's what I was about to say. I've had Amazon Prime for about 12 years.
The handicapped version of Amazon Prime Music provided free to Amazon Prime members is quite lacking. At least half of the music that I want are not on there, unless I pay extra to go to Amazon Music Unlimited. which I have never been willing to do.. instead, I subscribe to Google Play Music, now YouTube Music... because, surprisingly, a lot of music are not on Spotify or Apple Music.
I think it's a big conspiracy because all these giant tech companies refuse to offer one solution for everything. They want people to buy service from all of them. They are basically a mega cartel.