Most non-techies actually don't need version control. At least not version control that works the same way source code version control works. Writers and digital artists already have infinite layers of undo in their authoring software which is generally good enough.
non-techies also have a need for version control. They just don't have access to it.
If I had said, "I want rsync for non-technical users" a couple years back, I'm saying I wish there was something like Dropbox. You might have said "rsync isn't for non-technical users", which is besides the point.