Not sure about inferior to spotify though. Lots of things (for me at least) aren't available on spotify, even with subscription. More often than not quality is actually better on YT music. Major thing is also asking in car for 'yo google play me this and that' and spotify just returns some nonsense or cover where YT Music always returns the right thing. Apple music is absolute crap, quality of sound was enough that I didn't even bother extending trial into anything more and UI is atrocious.

YT music, for me at least, not perfect but better than the two by far. I still keep spotify sub because sometimes we share playlists in office etc.. not sure I'll extend to be honest. YT Music on the other hand, especially in car is essential.