We were a startup and I was the "management", but it was mostly for HR reasons. The original dev who convinced me to try Julia ended up leaving, and when we pivoted to a new niche that required a rethinking of the codebase, we took the opportunity to re-write in C# (mostly because a we _needed_ C# to develop a plugin, and it would simplify things if everything was C#).
We were a startup and I was the "management", but it was mostly for HR reasons. The original dev who convinced me to try Julia ended up leaving, and when we pivoted to a new niche that required a rethinking of the codebase, we took the opportunity to re-write in C# (mostly because a we _needed_ C# to develop a plugin, and it would simplify things if everything was C#).