"Reader" apps, broadly construed, can already offer outside subscriptions. Apparently, Spotify does not pay a 30% fee to Apple, but only 15%, and that on less than 1% of its paid members, so only around 0.15%. That does not seem to constitute unfair competitive advantage.
Well I‘ve read that math many times and I don‘t understand the intention here.
Of course the number is very low - Spotify did not allow subscriptions through apps for a long time (do they now?)
Even if they have to pay 15% now (I don‘t know) that‘s still 15% of their margin (!). Apple is able to make much better offers because they don‘t have to pay that fee.
The 0.15% is math meant to distract, just ask Spotify.
https://www.cnet.com/tech/mobile/apple-fires-back-spotify-pa...