Micro Soft began its rise based on their strong-arming OEMs into using their OS in the 80s and they could get away with such coercive tactics because the accountants of the world demanded multiple sources for the acquisition of the hardware (to the accountants of the world hardware and software came out of different accounts,) and that is why PCs got purchased. The illegality of the software's origin was "somebody else's problem."
Apple was a single source for uniquely designed hardware so it was NOT getting past a corporate accountant. Even IBM was forced to abandon touting their superior OS/2 as a selling point. Anything else at that time that anyone else was offering was going to be multi-source and therefore receive a pass from an accountant, after some justification for the expenditure at a board meeting or two.
The accountants NEVER cared about the OS or the software, hardware wasall that they were writing the purchase orders for. Its now 2012 and they STILL DONT CARE. (Bean-counters don't understand the synergy, they only understand the difference. Ask them and you'll see I'm right. [They teach entire seminars in medical schools about this blind-spot.])
All they know is that it better be perpetually cheaper to own and NOT get in the way of their firms' buying of hardware.
Now that tablets are sub $1K products, and accountants are NOT being consulted for such petty-cash expenditures, Apple's iPad is getting adopted (despite Apple's best efforts to remain a consumer electronics products company.)