"I think Apple can either take a commission on all commerce they want on the App Store or they can be the exclusive place to get software for you iPhone and iPad, but they cannot be both.  - Matt Birchler on Bitchtree"

 https://birchtree.me/blog/its-bad-for-consumers-and-its-bad-for-patreon-but-what-are-you-going-to-do-not-ship-on-ios/