I don't think Microsoft stack offers a path to like, a mid-six-figure job at a major Silicon Valley tech company. Nor will you me able to leverage much of the SV ecosystem if you're trying to do a startup. In that sense it could be seen as a career dead end.

But there are plenty of solidly middle-class developer jobs in the IT departments of traditional companies, and a robust ecosystem of small consulting firms all around the country; I would guess that your best bet for optimizing lifetime earnings on the Microsoft stack is to grow some business savvy and start one of those.