I'm trying via Clojure. In general it seems that Lisp suffered from a closed ecosystem. I know that there are tons of simple Lisp interpreters for free. But th

I'm trying via Clojure. In general it seems that Lisp suffered from a closed ecosystem. I know that there are tons of simple Lisp interpreters for free. But there weren't any really good ones for free 10ish years ago with a permissive license. Take the Allegro CL used in the paper. The free version doesn't allow commercial use [1]. Sure, you could do things with LISP as we've seen with PG, but it's not anywhere as practical as Java was near it's inception. Java was free to use for whatever you wanted. It was quickly improving VM. Verbose < money. [1]http://franz.com/downloads/license.lhtml http://franz.com/downloads/license.lhtml