Here's a conspiracy theory for you.  Does anyone remember back to 1998 when Microsoft was sued by the Justice Dept. on anti-trust charges?  I seem to recall that an announcement was made that the company was to be split in two.  One OS the other apps, specifically I.E.  Then the whole thing was dropped.  No changes.  What if the government made a deal to leave the company alone in exchange for a "back door", a spy hole, into computers running the OS?  And once that hole was made Microsoft finds it impossible to make the OS secure, like a hole in the dike more keep springing up around it?  Just sayin'!