Microsoft Fall? Are you kidding me?
Microsoft will fall when Apples fall (maybe).
Remember, here are some catch phrases:
MS DOS - 2 digits for years, Y2K problem.
Windows 98 - has it worked today?
Windows XP - experience the "it worked today" phenomenon.
Windows Longhorn - grow a 3-D horn in new direct-x 3-D environment?
Plus, when you think about it, in the olden days, the typewriter was the most significant invention. In modern days, MS Word is the most significant invention.