This is one of the reasons why I'm skeptical that Apple opening up iOS to sideloading will lead to Meta, Google, or Amazon rival third party iOS app stores hosting apps with more invasive tracking and lack of privacy protections.
These tech giants are great at xeroxing products and features, not so good at selling them in such a way that users can be convinced to switch. The existence of so many cookie-cutter clones that never get anywhere, from entire cloud gaming platforms, to mobile payment methods, to slapping Snapchat-style stories into an app for no reason, shows that it's easy to envision and build, hard to get actual users.
These tech giants are great at xeroxing products and features, not so good at selling them in such a way that users can be convinced to switch. The existence of so many cookie-cutter clones that never get anywhere, from entire cloud gaming platforms, to mobile payment methods, to slapping Snapchat-style stories into an app for no reason, shows that it's easy to envision and build, hard to get actual users.