That's my question as well. What exactly are they looking for? What outcome do they want from these anti-trust investigations?
If Spotify is upset about the 30% cut... they can
already let people sign up on their website and avoid the 30% cut. Other companies are doing it. Example: Netflix
Hell... Spotify
themselves told people to do that in 2015:
The Apple Music rival sends out an anti-iTunes PSA
www.theverge.com
Of course Apple won't allow a window to pop up
inside the Spotify app to give your credit card number to Spotify.
But... the Safari browser is literally a couple taps away... with no restrictions. Seriously... it's the freakin' open web.
This seems like a solved problem. I wonder how many more investigations need to happen.