Windows 12 could see a substantial system redesign in order to include a more AI-centric user experience. The start button could thus be replaced with Copilot AI, which is already available as a preview version in the latest Windows 11 update.
I only have one machine using Windows because I don't want to be "left behind" in the corporate desktop world, but it's on my "left hand monitor" while my center and right of three monitors are Kubuntu. The specs won't let me use 11 on any of my systems. My company laptop is still Windows 10 as well because some of our security software doesn't run on 11 yet.
If I didn't have to work in the corporate space, I'd quit Windows in a fast second. I have been using Kubuntu as my daily driver for almost 10 years now.