Again, 100% not going to engage on another senseless ZFS/dtrace/whatever platform flame. But this point is worth responding to: > Was SunOS 4 as transformativ

Again, 100% not going to engage on another senseless ZFS/dtrace/whatever platform flame. But this point is worth responding to: > Was SunOS 4 as transformative as BSD? SunOS was BSD! 3BSD was absolutely transformative. But 4BSD launched after Joy and much of the team were already working at Sun, and almost all future "BSD" innovations of note were actually SunOS features. Sun took a historically important but otherwise obscure academic platform (total VAX BSD deployments as of 1982 were what, in the dozens?) and turned it into an industry-defining software environment that we still use today (albeit in cloned form).