Whatever else is real or myth with regard to these trolly pranking trademark spats, I think it's pretty reasonable to say that the term "cyberspace" emerged amidst - or at least adjacent to - a lot of LSD and Grateful Dead tapes.

https://w2.eff.org/Misc/Publications/John_Perry_Barlow/HTML/...

Timothy Leary did say "The PC is the LSD of the 1990s" on the back cover of his 1994 book, Chaos & Cyber Culture (Ronin Publishing, ISBN 0-914171-77-7).

Cyberspace is defined with the word "hallucination", and Gibson spent 1977-1983 writing his short fiction and first novel on the subject. The degree to which he was influenced by psychedelic culture is open to debate, but I agree that it was non-zero. I think Grateful Dead tapes is your own projection, however. Bob Marley is more likely as muse-ic.