They’ve listed all their arguments on their site www.timetoplayfair.com, although I wish some where more technically in-depth.
Or even just any legal depth. It's all just PR fluff speak.
Personally, I use Amazon Music because I get it as part of Amazon Prime. It has most of the music I want to listen to, but not all. I was considering Spotify, but with nonsense like this, this is one potential customer that they have lost.