Spotify, comply with Apple rules (and still available within the AppStore) so technically Apple gave them the right (and also tries to show it as an example of them offering competition inside the store).

But the moment a device is dominant in the market and allows third party on the platform it results asking legitimate questions about competition.

I can do it too: What gives YOU the right to install an application on YOUR own computer?

My phone isnt apples, its mine.

Um, it’s actually my hardware. Apple would be remiss to forget this.