That sounds right. Also PARC had Cedar, which did multitasking without memory protection, which Unix didn't usually at the time.
BTW, I'm curious what you think about the question I asked in https://news.ycombinator.com/item?id=22083468
BTW, I'm curious what you think about the question I asked in https://news.ycombinator.com/item?id=22083468
With exception of SGI and NeXT, UNIX never had a multimedia culture.