> It'd be stupid to give that up and risk a triple-digit-billion-business (iPhone) for what's bound to be a small fraction of that (ads in the App Store).
You don't have to outrun the bear, just your friend.
Yeah, but running doesn't just mean "have better privacy" than the competition (i. e. Samsung/Google). Privacy is only one of many dimensions Apple is competing on, and running up the score there may still help them when the competition is better along other dimensions, like those cool self-igniting firework-phones I keep hearing about.