Maybe I'm misreading the original article, but it sounds like it would also apply to apps distributed only through the regular App Store:
> Core Technology Fee — iOS apps distributed from the App Store and/or an alternative app marketplace will pay €0.50 for each first annual install per year over a 1 million threshold.
Only if they choose the “new” terms, they can stay on the existing terms if they want to distribute through the App Store, as it’s free so the commission change doesn’t matter.
Basically seems to kill off Facebook forcing people to a Meta App Store for the free FaceBook app (and thus not being subject to App Store review, which has stopped some of the more brutal privacy invasions they’ve tried)
> Core Technology Fee — iOS apps distributed from the App Store and/or an alternative app marketplace will pay €0.50 for each first annual install per year over a 1 million threshold.