Windows demonstrates the fundamental flaw with capitalism, quantity over quality. Both OSX and Ubuntu are far superior operating systems from a technical and UI standpoint, but Microsoft's monopolization of the market in the 90s means people got comfortable with Windows and getting someone to change is hard, even to something better and cheaper.

Lots of people say that one man can't direct a multinational company. The computer industry completely ignores that. Windows XP was the last OS that Bill Gates was CEO for, and it was pretty good. He left and then Vista and 7 came out.