Do you want to install an app on your device without telling Apple? You can't.
Do you want to build apps for your own device and not have to reinstall them weekly without telling Apple your banking details? Tough luck.
Platforms that don't give users an escape hatch to run their own software have nothing to stop them from abusing their users. They will abuse their users' privacy just as much as they will abuse their users' wallets.
Do you want to get your location without Apple also getting your location? You can't. https://news.ycombinator.com/item?id=25355587
Do you want to install an app on your device without telling Apple? You can't.
Do you want to build apps for your own device and not have to reinstall them weekly without telling Apple your banking details? Tough luck.
Platforms that don't give users an escape hatch to run their own software have nothing to stop them from abusing their users. They will abuse their users' privacy just as much as they will abuse their users' wallets.