Almost every OS that has offered C and POSIX has floundered without getting traction, too. The number of operating systems that have succeeded in any real way

Almost every OS that has offered C and POSIX has floundered without getting traction, too. The number of operating systems that have succeeded in any real way is tiny, and probably not big enough to draw any conclusions from. None of the major players today got to where they are now by following the conventional wisdom of their day. I assume the next big OS (or three) will similarly succeed by breaking all the rules we thought we knew.