I've been a long time Apple Music user. Spotify definitely has weaker collection. But, I like the cross platformness/integrations of it. I can cast to chrome cast, play it on linux, and other third party integrations. Also, spotify connect is really nice. That said, Apple did start integrating Apple music with third party providers too (alexa, google home comes to mind). We'll see how it goes.
I have a wonderful thing that Creative used to make, now discontinued I believe. It consists of a USB dongle that appears as a pair of USB stereo speakers to the computer but is actually a radio transmitter, and a matching receiver unit that has stereo line level outputs.
No need for any special drivers, or any special support on the part of music player apps. As long as whatever the player is running on knows how to use USB speakers, I can get the sound to end up at my A/V receiver.
I don't know why this approach was not more popular.
People do the same thing with bluetooth speakers now and you can get a simple bluetooth dongle for about $15 that will output to any speakers/amps/headphones.
You say it looks optimistic, but you don't know about the Android situation and the only thing you have to go on otherwise is a web player that is "coming up" (and therefore does not exist). I don't see how you can come to this conclusion based on this data - you may as well say you are feeling positive for no reason at all.
