Just because Encarta existed, didn't mean Wikipedia shouldn't; or because NFS exists, Dropbox shouldn't. They can be solutions to the same problem. In git's cas

Just because Encarta existed, didn't mean Wikipedia shouldn't; or because NFS exists, Dropbox shouldn't. They can be solutions to the same problem. In git's case though, it sounds more like a abuse of its underlying properties (not to mention, you'd have to block all git commands that can rewrite history).