Steve Jobs On iAds:
[It's to] make developers more money…. People are using apps way more than they are using search. So if you want to make developers more money, you’ve got to get the ads into apps. But the mobile ads we’ve got today rip you out of the app…” Apple has figured out a better way.
This is pretty much the same as his statement on the iPhone 4.0 launch: asymco | On a mobile device Search hasn’t happened.