My guess would be the JVM. Racket is an academic language, designed for academia. At least it markets itself as such. Made to explore the design space of progra

My guess would be the JVM. Racket is an academic language, designed for academia. At least it markets itself as such. Made to explore the design space of programming languages. Clojure was designed and marketed for the enterprise. Builds on the JVM, full Java interop, emphasis on pragmatism.