@louis@emacs.ch Common Lisp can coexist and compete with C/C++, and Clojure with Java.

Racket has a lot of features but it lacks a clear positioning from the point of view of marketing. The Language-Oriented-Paradigm is a good aspect, but it is not yet associated to some precise "marketing advantage". There is no yet some killer framework, using Racket. It is difficult to think to a precise usage scenario "owned" by Racket.

Also in the academic world, Racket is seen probably as a "toy", respect Haskell, Idris and other PL. So, it has not their same charisma, despite it has a very good and interesting type system.