Not saying Apple is on the right side of this, but we've only heard from Spotify
Well. Not really, we've not just heard from Spotify. We've heard from Spotify, from Epic, and from Apple itself about how it followed the EU ruling along with lots of legal opinions on the legality of the ruling.
Not all sides carry equal weight. At this point any normal person would be taking Spotify's point at face value given the recent past performance of Apple directly related to the EU's ruling.
Apple isn't stupid and if they are just doing this only because they want to defy EU regulations, that doesn't make sense.
But they literally are. The EU actively re-opened an investigation into Apple based on how Apple responded to the ruling from the EU, and they are very likely to end up dragged into court again at this point. We covered this in multiple /. stories about the serveral ways in which Apple is trying to defy EU regulations as well as punish those who stand to benefit from them.
It's not a case of stupid, this is just a game to them, one that could be worth billions if they win.