LISP

Common LISP doesn't have standard sockets and threads, just like C.

Lisp's main problem is with the fragmented (and small) community with all the problems that entail, lack of good documentation (there is some good stuff but not much) and completely lacking in the marketing department outside of the gurus, zealot converts (yes functional programming is really neat I know) and old diehards.
Clojure seem to be getting some of this right however.