I can't recall any difficulty in making the C language definition completely open - any discussion on the matter tended to mention languages whose inventors tried to keep tight control, and consequent ill fate
Dennis RitchieC was already implemented on several quite different machines and OSs, Unix was already being distributed on the PDP-11, but the portability of the whole system was new
Dennis RitchieFrom an operating system research point of view, Unix is if not dead certainly old stuff, and it's clear that people should be looking beyond it.
Dennis Ritchie