[idle_zealot]

> For example Apple uses their big stick to ensure that apps can't simply refuse to work if you enable privacy setting that limit them. If Facebook refuses to work until you give it full access to your photos and exact location even when the app isn't running the realistic outcome will be that everyone will just give them what they want rather than not using the service

Apple also stops you from installing third-party apps for the service that circumvent those and other limitations. In an open system you can intercept the app's requests and feed it fake responses, spoof your photo album, GPS, whatever. They can try to detect spoofing, but at the cost of making their services flaky for normal users. This is a cat-and-mouse game that the mice (that's you) win. Except you can't play it on an iPhone, because it breaks the service's (probably illegal) Terms of Service, and Apple will use their Big Stick to ensure nobody can commit acts that risk their partners' business models.