"And they both ripped off the Xerox Alto environment."
Back then the concept of "ripping off" didn't really exist in the computing world. As one example, almost all computers shipped with complete source code, not just to the OS, but also to the applications. Consider that nobody attending The Mother of All Demos had to sign an NDA.
It wasn't until after Bill Gates' "Open Letter to Hobbyists" that the big-wigs in the computer world started jealously guarding this kind of thing.
Biting the hand that feeds IT
