It's still not clear to me, after being an Apple user and fan since the beginning and after reading Steve Job's biography, how much innovation Steve really brought to Apple. What I mean is: was Steve really the one who gave the initial impulse for some of the most innovative products we have seen so far (i.e. iPhone, iPad, iPod, etc.)? In this case, I think that Apple is doomed.
If, on the contrary, Steve was the quality checker, the one pushing everyone else to do better, I think that the current Apple's executive team can properly replace this role and do good at Apple.