"It is important to note that the earlier Unixes were all proprietary and controlled by specific vendors with products that were derived from either the Berkeley or ATT Unix. DEC tried to create a single standard, but all the hardware guys wanted control. The big deal was Stallman's base tools (GNU) that allowed Linus to build Linux at zero cost, which was not controlled by any hardware vendor."
"Unix was the key enabler that allowed workstation companies to form, most notably Sun."
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