My impression has been that the people in the LISP community would be happy to tell you about how their model has been fairly consistent over the past several decades and that a lot of the 'new advancements' we're seeing all the time have been available in LISP for that whole time. And, funnily enough, one of the most highly recommended projects in LISP is making your own!

I don't get to deal with LISP anywhere enough to substantiate these claims from actual experience, but that is the impression I have gotten from hanging around places like this.