If Spotify wasn't on iOS I would move back to Android in an instant. I don't like Apple services because I don't want vendor lock in.
I use Spotify because they're independent and support a large number of devices. This is just like how I use Sonos because they're independent and support a large number of services.
Apple benefits greatly from having high quality, third party applications on iOS. Wasn't the lack of third party apps/support one of the big issues with Windows Phone?
Lots of people said that when a popular local carrier changed from free Spotify to free Apple Music on one of its plans. Everybody switched to Apple Music.
Windows Phone failed primarily because it didn't offer anything that Android or iOS couldn't offer.
I use Spotify because they're independent and support a large number of devices. This is just like how I use Sonos because they're independent and support a large number of services.
Apple benefits greatly from having high quality, third party applications on iOS. Wasn't the lack of third party apps/support one of the big issues with Windows Phone?