It only works on Apple devices. I use an iPhone but also a Windows PC. It’s extremely simple to not consider Apple Music if you don’t have all Apple devices. I hate that ultimatum of “use ONLY our products or have a subpar experience.”
It works on Android with an app and Windows in the browser. That being said, the subpar experience part is definitely something I agree with, and come to think of it, if I used Windows I probably wouldn't use Apple Music either.
Might’ve been, but I think I recall it took them a couple of months.
Anyway, another factor in the decision could be that aside from Tidal, Apple Music pays the most to the actual artists per stream. Almost twice what Spotify pays, I believe.