Anecdotally (n=1, of course) I have seen and heard tremendous resistance to clisp in the industry I work in 5 years ago. Now, clojure and Scala are being adopted and recommended by even conservative PMs and architects.

The choices are way more today (Almost a tautology given old choices don't really vanish into thin air) and on more reliable platforms with tried and tested libraries.

anyway the spirit with which i meant that statement was that it is far easier to convince "senior management" and others with power to let stuff be done in clojure / Scala than it was to convince them about ml or clisp five years ago.

And I am not even talking about "ivory tower Haskell" (which i love using).

(Don't know enough about erlang / f# to comment).