Erlang is not that performant in the general case compared to C/Java/etc. While the conceptual overhead in distribution is much lighter with Erlang, actual computation in an idiomatic implementation tends to be slower than Scala/Akka.

Of course, there are tasks for which an Erlang implementation would be faster, but as others have mentioned, most organizations would prefer to write Scala.

(Yes, I find that icky too. :-))