Just a sort of random thought; I think it’s interesting to see the number of efforts to build new languages on old vm’s (NLOOVM).  For example:

JVM:

• Clojure
• Scala
• Kotlin

BEAM:

• Elixir
• Lisp Flavor Erlang (LFE)
• Alpaca

These new languages are getting lots of traction.  Likewise it’s an interesting (and somewhat puzzling) situation with the CLR.  Pretty much anyone working on the CLR is working on C#.  Oh there are other languages on the CLR but they have nowhere near the level of interest or penetration of either Clojure or Elixir respectively.