Idk I see this as being like their music streaming service that I imagine no one uses, seems more appealing than stadia tho
I used Amazon Music Unlimited, when they had that 6 months for 10 cents offer.
It didn't have all that much on it, as a lot of music i was interested in, was only on Amazon to buy, but not on the service, and at 9€/month is just laughable.
The service itself was fine i guess, mostly used it at home, so i can't really speak to its convenience.