The DMS operating system on the 1130 had a 5-character filename limit. Chuck Moore wanted to name his language FOURTH, to signal a fourth-generation language. The filename limit truncated the name to FORTH. A disk system constraint from 1968 is why the language is called Forth.
I would love to see people start to move these simulators onto the web, https://infinitemac.org, like, so that the systems were more accessible to casuals.
A lot of our software really depends on things like fast disks and significant memory. I think we might have ended up with the development of memory-constrained algorithms that don’t exist now, and computing would be very much a batch-mode endeavor rather than the interactive process we have now.
(I've built two online systems for teaching my students computing: https://bcp.cs.montana.edu and https://mtmc.cs.montana.edu w/a similar vibe)