We still don't have a Memex. We got close once.
We also don't have capability based operating systems in daily use.
There's a ton of software we still don't have, and need.
[1] https://www.theatlantic.com/magazine/archive/1945/07/as-we-m...
[2] https://worrydream.com/refs/Bush%20-%20As%20We%20May%20Think...