I believe GoogleDrive used to mostly be a tag-based system, where a tag is a folder. In other words, a file could be in any number of folders and there was no "

I believe GoogleDrive used to mostly be a tag-based system, where a tag is a folder. In other words, a file could be in any number of folders and there was no "preferred" folder. Recently, though, they've switched to having a single parent folder for every file (though you can still have references to the file in other folders). And I believe the reason for this was exactly because roles and permissions were hard to reason about. Still, I like the idea of a tag-based filesystem. If nothing else, I wish file types were represented as tags rather than extensions.