[pjmlp]

Academia was crucial in the adoption of UNIX and C, because in the early days UNIX was free beer (AT&T tried to fix that afterwards), so a juicy alternative to paying for Multics, MVS...

That also made UNIX an ideal teaching device for OS programming classes versus the toy OSes developed by students.

Well, until AT&T forbade the circulation of UNIX V6 commented book.

https://en.wikipedia.org/wiki/Lions%27_Commentary_on_UNIX_6t...

[anthk]

What's your opinion on ITS?

[pjmlp]

Not much, I have read a few articles about it, but never cared much to dive into it.

Other than it was probably great having an OS where LISP had the spotlight alongside Assembly.