Windows has had file tagging since at least XP. Not a lot of people use them (probably because the UI for it is hard to discover), but I have used stuff like royalty-free photo libraries that have searchable tags.
Moving and duplicating both preserve the tags: they're metadata. They're part of the reason for those pesky .DS_Store files that proliferate on network shares and non-Mac filesystems, in fact.
That's ~10% of desktops in the world (and 1 of the 3 "mainstream" desktop OS out there, counting linux)
I'm too much of a mess to use them, but they're there.