Yeah, so if the analysts are to be believed -- and Hollywood is wrong about the world ending first - - Apple might just sell 82+ million iPhones in 2012 (not by 2012, but 82+ million that year alone!) accounting for 5.7% of the market.
RBC guestimates that Apple will dominate the media-centric category of smartphones, much as RIM will dominate productivity, leaving Palm and perhaps others to fill out 2-3 additional categories like personal information management, cloud-focused, etc.
The growth in smartphones is expected to come not only at the expense of feature phones, but of PC-class devices as well (fulfilling the so-called Post-PC prophecy).
Personally, we're waiting for Apple to make an iPhone with the compute power of a MacBook Air that I can just dock into a MacBook shell when I need to do more serious work. Cloud storage, mobile compute power, dockable productivity. That's the future we'd like...