But apple can ban other stores in it's store. They can say 'we made platform open to sideloading, you can even sideload other stores' in combo with several warn

But apple can ban other stores in it's store. They can say 'we made platform open to sideloading, you can even sideload other stores' in combo with several warnings that sideloading is dangerous when a user attempts to do it. This can guarantee that apps will stay inside appstore bc it will be too hard for users otherwise