I state in the opening paragraph that I'm talking endgame market share. The modern Tablet market is only 2.5 years old. Microsoft didn't introduce Windows until a whole 8 years after the Apple II was released and Windows dominates the PC market.
Apple sells more iPads than any company sells PCs, sure. But all PCs combined dwarf everything Apple sells. So the market for a non-Apple tablet is there.
This thread was my explaing why I believe enterprise and education will latch onto Windows 8 more than iPad.