A gish gallop is attacking the opposing side with a flurry of different arguments, I merely supplied a long list of rebuttals to your assertion we would not have the PC without copyright. I included the IBM mention because I assumed you meant “Personal Computer” not “IBM PC”, as the latter, while vastly important in its own right, is still eclipsed by the PC as a concept. The world would be different without the IBM PC, while the world would be much MUCH poorer without computers in every home and/or pocket. The IBM lineage might be resilient, but we could just as easily have had a (non-Apple) NeXT, Magic Cap, PSION, Be, Amiga, etc descendant as predominant computing platforms instead. And my point with the Lions book, is that it’s emblematic of the control AT&T exerted on Unix, instead of letting it be free, where they (and descendants USL and SCO) attempted but failed to squash an open information revolution (*BSD and Linux) that had been seeded by Unix to begin with.