Earlier quoted context omitted.
Which is why UNIX got widespread in first place. I very much doubt it would have been adopted in such scale, specially for the then startups trying to start a workstation market, if Bell could sell it at the same prices other OSes were being sold.
Possibly, possibly not. Consider the competition Unix had at the time it was released. A cut down version could've also made inroads into the desktop market (for business users).
Plus maybe the Xerox PARC attempts would been more successful if there weren't a cheaper UNIX workstation as alternative, in spite how they managed the whole process.