Thanks for the comment.
You do make me wonder if you listened to the whole talk, or read the script (https://docs.google.com/document/d/1wM1-c7euvQaRaCL4hKCaE8VR...)
I specifically addressed and discussed Lisp, Symbolics, & OS/400 (which is still alive and well).
IBM i (as it's now called) seems to more or less treat everything as a single giant disk than as a single memory space, though. However, it's been hard to find solid info for non-IBM-specialists.
It is not at all focussed on GUIs, no. However, I needed something pretty to put on the slides.
The focus is explicitly, as discussed, on end-user general-purpose computers, not servers. Servers are very well-served (pun intended) already.
Yes, I _know_ that this is not all-new. Indeed, that was one of my core points. The reasons are:
[1] I think there is more significance to something obscure or niche that has survived for decades and is still actively maintained and used than almost any flashy new offering which could fizzle out again just as fast.
[2] Using existing tech means that there are people out there with experience in it. It is not all-new for everyone. That's helpful.
[3] I personally am not very interested in GPU tech, and I think the new Apple M1 ARM chips bear out why: the standalone super-powerful GPU with its own RAM is probably a temporary artifact of PC designs and the gaming market.