Norvig actually did comment on this publicly once on the Lex Friedman podcast. Basically what he said was that lisp ended up not working well for larger software projects with 5 or more people on them, and the reason why they never used lisp in any of their books again was because students didn't like lisp. Norvig doesn't seem to get why students didn't like lisp, and neither do I but somehow this is the real reason why it was abandoned.
> Basically what he said was that lisp ended up not working well for larger software projects with 5 or more people on them
I don’t think "doesn’t work for teams of 5+" is a fair generalization. There are production Clojure and Emacs (Lisp) codebases with far more contributors than that.
Language adoption is driven less by inherent team-size limits and more by social and practical factors. Some students probably don't like Lisp because most people naturally think in imperative/procedural terms. SCIP was doing a great job teaching functional and symbolic approaches, I wish they hadn't shifted their courses to Python, since that increases the gravitational pull toward cognitive standardization.
https://youtu.be/_VPxEcT_Adc?t=2690