Imagine the complexities, not to mention the complexes, attendant to being the worlds largest software manufacturer when your principal original idea so far has been a cheaper price than Apple?
Microsoft may well qualify as the American company to achieve the most success without introducing to the needy world at least one original idea, unless, of course, a low-down price can be construed as such a welcome contribution.
Lets look at the spotty history of, not innovation, but imitation.