But the people who use a PC or Mac will not be able to work on a tablet. My nephews are in the arts (sound engineering and graphics art) and although they love their iPhone/iPad, they wouldn't be able to do their jobs on a tablet. Same with everyone that I work with in IT. I couldn't do virtualization and SQL work on a tablet and our programmers wouldn't be able to do their jobs.
But then again, maybe that would explain why there aren't any more Apple servers... Apple pretty much skips the Business world altogether and only has the niche markets of sound/graphics while the world goes to work on Microsoft products.