If there are other app stores, does that mean they'll be able to have different privacy rules? Or would that be blocked at the OS level? It seems like some stuf

If there are other app stores, does that mean they'll be able to have different privacy rules? Or would that be blocked at the OS level? It seems like some stuff (giving the app access to your location, contacts, etc.) would be subject to OS-level control, but the recent change to opt-in personalized ads would be easily reversible by any new app store.