Apple will actually hurt themselves with this change. The apps that can afford to advertise have a paid component to generate revenues. Apple taxes this revenue at 30%. I don’t get why they are going after FB when they aren’t a threat and Social media is the reason to people upgrade your phone to get a better camera. Not to mention the revenue FB drives in App Store purchases.
That’s a solid point. I’d look out for Apple to push their app install ads into more places (eg. the home search bar, various apps they bundle with the phone). Maybe a second attempt at iAd - it will be easier for that to succeed with the competition blocked.