Although Windows NT was in many ways a version of the operating system VMS that failed against UNIX including having the same main architect, Dave Cutler, who h

Although Windows NT was in many ways a version of the operating system VMS that failed against UNIX including having the same main architect, Dave Cutler, who hated everything about UNIX and who refused to learn from its success. Plan 9 on the other hand was created by some of the very same people who created UNIX. It learned from UNIX and while it failed, it failed because to most people UNIX was "good enough" and the improvements of Plan 9 weren't compelling enough to switch.