It would have been different, no doubt about that. However, it's not like we don't already version everything internally. Wikis keep every edit in the revision

It would have been different, no doubt about that. However, it's not like we don't already version everything internally. Wikis keep every edit in the revision history, we put all our code in git, etc. Even back in the day VMS systems had a version number as part of every file name, with the OS automatically keeping past versions of every file. It's just that there's no version field in our standard url syntax, so there's no standardized way of using retrieving those versioned documents.