MS Windows 95 was built on MS DOS, which was culled/modified from QDOS when IBM requested a DOS system from them.
[...] Back to the so-called subject at hand. Elop as a trojan horse begs to ask one question... how did the board of directors truly fall for the whole "ecosystem" sale pitch from Microsoft and it's not an environment that many people in Europe utilize, support or have shown to be able to access or shown willingness to get behind.
That's like selling fire to people in Hades (note: hyperbole).