Games, security, finance, and a mindboggling number of companies writing line-of-business software. "Dark matter developers" is a term I've heard used for some of the latter: https://www.hanselman.com/blog/dark-matter-developers-the-un...

I would generally say that native Windows development is in decline, but it's a long slow decline and it's starting from an incredibly high base.

"a rounding-error of zero" is so wildly incorrect that it is very clear you are in a bubble of sorts.