Earlier quoted context omitted.
My parents are not technical, I don't want to have to worry about their phones or computers, so they use iphones and ipads, and I have a pi-hole connected to their router that clears away most ads. They like going to the app store and knowing there is at least some level of curation on the apps. If they suddenly have to start dealing with competing app stores and sideloading and menus and all that stuff their experie…
Do you think suddenly iphones will come out of the box with competing app stores? What made this strange thought pop into your head?
Apple takes a huge cut of the money spent on the app store, and everyone will have a huge incentive to move users to different stores if they can. This isn't difficult to understand if you thought about it for more than a minute.