Depends were you lived. I was at an Universities with maybe 20 professor working on AI related stuff. There were a few Lisp Machines. But there were all kinds o

Depends were you lived. I was at an Universities with maybe 20 professor working on AI related stuff. There were a few Lisp Machines. But there were all kinds of machines which had commercial Lisp systems: the University had a site license for Allegro CL. There was LispWorks, MCL, Golden Common Lisp. Earlier there was Lisp on the DEC 10, the VAX 11/780 and 750s. Industry used Lisp in some projects. Philips medical research for example. Alcatel. BMW wrote applications in Smalltalk.