Well, I think it’s probably fair for users to expect a site advertising itself as a great web host for git to not serve stale files over web protocols. It’s kinda the entire point of the website.

Maybe it’s a bit questionable to use the raw feature as a content host, but GitHub has intentionally moved pretty fair from plain old git (I believe people call this a “moat”)

I’m sure there are plenty of other players competing for users that would be happy to solve the problem for free.