I can (and do) block Facebook and be almost not affected with what they do, but iPhones as part of a duopoly cannot be avoided. I like and use Apple hardware but hope that Facebook and Epic rip them into pieces. It's completely inacceptable that a single company holds the sole power to access such a widespread platform. There needs to be a side-loading choice and alternative app stores.
Why? What about Apple's practice is unacceptable?
What is the difference between Apple's behavior and how Nintendo or Sony run their platforms?
Personally, I do not want another store outside of Apple's because I value the review process. Compare Apple's app store to the Microsoft Windows Store. The relative quality of apps on Apple's store is significantly higher than on Windows Store.
Then feel free to not install apps from different stores?
And let everyone else choose to use those other stores, on their own phone, if they choose to do so.
And you should be free to keep the "don't jailbreak my phone" option on, and other people, who know the risks, should be free to switch that off.
Put a scary warning on it if you like. Problem solved.
Everyone gets what they want.
As for Sony and Nintendo, 3 wrongs don't make a right.