I don't think it is that under-represented in North America. There are large swaths of "flyover country" that are deeply invested in .NET and C#. It was never "hip" or "cool" for Silicon Valley, but a lot of the Fortune 500 outside of FAANG/GAFAM/what-have-you is quietly built on it. Scott Hanselman termed it the "dark matter developer" experience that most .NET stuff just doesn't trend on Reddit or HN, it just kind of quietly exists and gets things done.