I think the biggest 'threat' to windows for general users has been mobile, besides that it seems like it's mostly running on momentum from the ecosystem of decades ago. The challenge is that most migrations for established users of any system take effort, and right now the effort of running activation/account requirement bypasses is low effort compared to changing to and learning a new OS.
The way of framing it which works for me is that there doesn't seem to be much reason to move to windows, if you were starting computing with a blank slate and could pick anything, why would someone want to pick windows? Most people need a mobile anyway which serves a lot of consumer needs. Gaming is a big one if you're not happy with mobile/console, but there's the wine/proton on linux route although there's a subset that won't work or has compatibility issues (from minor paper-cuts to major). And then there's those that need specific windows-only software with no alternative elsewhere.
The way of framing it which works for me is that there doesn't seem to be much reason to move to windows, if you were starting computing with a blank slate and could pick anything, why would someone want to pick windows? Most people need a mobile anyway which serves a lot of consumer needs. Gaming is a big one if you're not happy with mobile/console, but there's the wine/proton on linux route although there's a subset that won't work or has compatibility issues (from minor paper-cuts to major). And then there's those that need specific windows-only software with no alternative elsewhere.