My disagreement isn't because wine or proton exist, it's because most people only use a web browser. They check their email, watch tiktok and netflix, and write documents. 90% of people would have all their computing needs met by a basic chromebook.
Here's an example to start: https://www.digitalsilk.com/digital-trends/mobile-vs-desktop...
> 15% of adults in the U.S. only use mobile devices to access the internet.
You're down to 85% already who even have the possibility of using your unicorn Windows-only software.
Yes, CNC machinists, mechanical engineers, and graphics designers exist. No, they're actually not the majority of the population. Also keep in mind this thread was talking about personal computers and not just work computers; just because some cashier's required to use a proprietary Windows XP program on their cash register doesn't mean they need to use Windows at home. Your argument is restricted to the small proportion of people who're either required or desire to do day job stuff on their personal PCs (of which not all of them actually need that highly specialized software you're referring to).