It is ok Apple has his own store with his rules and applies pay cuts, just don't force it as the only entry point because this is not acceptable at all in the contemporary view of an OS used by hundread of milions users.
Ask them to enable sideloading, that's all.
https://www.macworld.com/article/1794764/sorry-u-s-iphone-users-sideloading-in-ios-17-will-likely-be-limited-to-europe.html