For those who are on Windows 10 because they made a pragmatic choice to keep compatibility with their back catalog of Windows-only software and get the latest security but pay for it in the form of nags, schizophrenic control panels, and forced updates, Windows 11 has an opportunity to take over fast.
How? By removing one or more of the above pain points (and others I haven't listed). I'm not that hopeful that MS would reverse course on these user-hostile things, but I guess I am slightly hopeful for a scrap or two could potentially be thrown my way.
What if Windows 11 was just Windows a repackaged Windows 10 LTSC 2021? By most rumors, it's more different than WIndows 10 than that, but even if it was only a reboxed SKU that consumers would buy, it would sell like hotcakes.