My rebuttal: <a href="http://en.wikipedia.org/wiki/Gary_Kildall#IBM_dealings" rel="nofollow">http://en.wikipedia.org/wiki/Gary_Kildall#IBM_dealings</a><p>Short version, for those unfamiliar with the story: IBM approaches Digital Research to license CP/M, Digital Research refuses to sign a fairly standard NDA, IBM licenses DOS from Microsoft instead, Bill Gates now richest man in the world.