Apples main advertisements are the app store placements.

You're vastly underestimating the significance of that, as this is personalized too. It's also been shown that you cannot actually opt out of everything, only some things.

At the end of the day, I still consider my Apple devices to be less intrusive then the android and Windows devices I use, but you seem to have an outdated view of Apple's business practices - at least from my perspective