Most companies using anything MS on the dev side are neck-deep in it. Most .NET stacks don't go beyond JS and F#. It's a catch-22 where the in-house won't learn outside the Microsoft-approved stuff, so the best new fits are bound to the Microsoft stack and the ones making decisions go for more vendor lock-in stuff, etc.

I've had managers push for Blazor several times, despite the market of capable frontend devs who know/can learn JS being far bigger, and the technologies being more mature and proven. They aren't worried about vendor lock-in, they encourage it.

It's a shame too. Much of their tech is great, but we are seeing several of the good old M$ shenanigans popping up again, after their 'big open source' push.