F# only has access to a subset of .NET deployment scenarios, where Scala can be used pretty much everywhere there is a JVM.
So most companies actually are more keen to bet on Scala than F#.
OCaml/Reason world lacks the wealth of Java libraries, which are an import away on Scala.
Regarding Kotlin, so far its killer use case is targeting Android, where one is stuck with an ageing Java subset. Outside of Android, it remains to be seen how it will keep up with the Java improvements coming up every 6 months now.
So most companies actually are more keen to bet on Scala than F#.
OCaml/Reason world lacks the wealth of Java libraries, which are an import away on Scala.
Regarding Kotlin, so far its killer use case is targeting Android, where one is stuck with an ageing Java subset. Outside of Android, it remains to be seen how it will keep up with the Java improvements coming up every 6 months now.