IMO, not with anything approaching the install base&#x2F;jobs&#x2F;tooling&#x2F;etc. of C#, and you get the ability to practically use F# when appropriate.<p>Also, how many big &quot;enterprise&quot; shops are doing interop between a C-Style language and an ML-style language?  Probably not many, and almost certainly more are doing it with C#&#x2F;F# than anything else.