Perhaps you should read these:
http://en.wikipedia.org/wiki/86-DOS
http://en.wikipedia.org/wiki/Apple_II
http://en.wikipedia.org/wiki/Computing_timeline_1950-1979
“1979 USA IBM saw its computer market dominance being eaten into by the new personal computers, such as the Apple II and the Commodore PET. IBM therefore started work on their own personal computer. When finished, this computer was released as the IBM PC on 12 August 1981.”
No Apple II, no IBM PC.
No IBM PC, no Microsoft colossus.
No Microsoft colossus, MIT dropout Bill Gates ends up spending his life as a McDonalds manager. Or worse, middle manager at IBM selling terminals until the company dies.
Without MSFT, apple would have gone the way of bell bottoms and Osborne's.
BTW, It was Harvard, not MIT.
Talking to a Mac person is like trying to reason with a leftist. At its best, it's just no fun. Bill Gates is the archetypal Evil White Man, and everyone else is just another victim.