Microsoft has been doing the same thing that they've always done. A desktop OS in a tablet form factor is hardly innovation; it's exactly what the PC market was trying to push before the iPad. Microsoft's only innovation in this arena was to bastardize Windows into a hybrid OS across all their platforms, a move that has proven to be highly unpopular across a large segment of the PC consumer base.
Microsoft's biggest innovation in the past few years, at least as far as mobile goes, has been their Windows Phone platform, and the adoption rate for it has been pretty poor, right or wrong.
I don't see how you can say that Apple has been on cruise control. There have been a ton of changes and updates to the Apple strategy that Steve Jobs was dead set against, including the iPad Mini which was and continues to be a huge hit. iOS 7 was a big change that went against a lot of the aesthetics that Jobs was known for being in love with, and Cook has had no compunction about rocking the boat to get his team thinking outside of the box; just look at the firing of Scott Forstall. You can't tell me that was 100% about the Apple Maps "fiasco".
iOS 8, now, is doing even more to shake things up, and the continually closing gap between iOS and OSX is going to help to unify the platforms in a way that even Microsoft has been unable to accomplish. Cook changing the way that iOS treats third party apps and giving them more opportunities to interact with other apps is going to be huge, even if you can't see it yet. These are things that Jobs was not in favor of, so clearly Cook is not afraid to step out from Jobs' shadow and do things his own way. Now we've got bigger iPhones headed our way and analysts are positively giddy about Apple's future.
It may not be in the direction that you want, but Apple is driving ahead quite nicely.
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He can own a Surface and still recognize that Microsoft went after the wrong market with it. In fact, he's in an even better position to recognize the mistake that Microsoft made trying to poach iPad users.