There's an interesting comparison to HyperCard, which didn't have the intellectual scaffolding of Xanadu, but just worked, even on a typical Mac of the day with 1MB of RAM.
Until the stack got too large, or one forgot the ID of the card one wanted to link to or the search text which would allow one to make it a target, &c.
HyperCard was _amazing_ (and I still have my copy of _The Manhole: Where Alice would have gone if Alice had HyperCard_ which was the predecessor for _Myst_) and it kills me that we lost MacBasic:
https://www.folklore.org/MacBasic.html
and that HyperCard was such a mess of licensing that one had to use the "magic" word, or a command to enable Developer Mode and that it took so long to be developed/released:
https://www.folklore.org/Joining_Apple_Computer.html
(though one wonders what would have happen if it had instead been a NeXT product)
and then of course that the various alternatives had such tortured histories and of course the infamous "rug pull" when Live Code went closed source --- is there a viable free/opensource implementation which is nicer and more usable than Decker?