It counts as much as you throwing numbers around, regardless how much you apparently hate Windows development.The numbers I'm "throwing around" are from reputable publicly accessible sites - unless you don't think Stack Overflow is reputable. As far as the trend being away from Windows development - I posted a quote from the CEO of Microsoft in this very thread saying as much.
I don't "hate" Windows development. I would hate being stuck on unpopular, less marketable technologies. My area of expertise is still Windows back end development and ASP.Net MVC and .Net Core with a side of AWS netops, devops, and development.
Visual Studio Team Services is a joy to use for CI/CD.
I'm not disputing that Windows "owns the desktop" but the desktop market for developers is minuscule compared to web and mobile. All the money is going away from the desktop. How much money does the average consumer spend on desktop applications outside of Microsoft and Adobe? How much of B2B software as a service revenue is being spent on desktop applications compared to web applications and mobile? What are most people doing on their tablets if not MS Office and spending time on the web? Even if you're a developer, there is little money to be made creating development tools. My entire development tool chain consists of Fred Software besides the $11 a month a pay JetBrains.
Is it declining? Sure it is, consumers are no longer replacing their computers every two years, likewise with mobile phones and tablets.
We were talking about Software sells not hardware sells why are you conflating the two? As a developers selling software, The important metric is the installed based not the replacement rate. And you keep talking about the popularity of Windows desktops, but that doesn't matter as a software developer if no one is buying desktop software - except for MS Office. People are still mostly using thier desktop computers for office productivity and to go to websites.
I have seen countless technologies come and go
So have I, I got my start programming in 65C02 assembly language on an Apple //e. But I've never been one to mourn a technology that was passed its prime. That's the reason I've been moving away from the Microsoft stack toward cloud, web, and eventually mobile.
As far as where the money is for development....
Everyone including Microsoft sees the writing on the wall.
https://www.zdnet.com/article/selling-software-where-have-al...
https://www.cnbc.com/2016/04/22/mobile-game-revenue-to-pass-...