wikipedia cofounder dr. larry sanger on the establishment takeover of wikipedia, corporate control of online knowledge,

So you are right. Partly because of the sheer technical difficulty of archiving everything, first of all. And partly because some people have a vested interest in taking some information down. Like if there's some big, faceless corporation hosting a gamer community full of extensive chats, and the gamers made relationships, and there's like a whole history they care about — nobody else cares about it, but they care about it — there's just some people in a boardroom somewhere who will say, ”Oh, well, we gotta shut down this website, it's not making any money anymore.” Usually for legal reasons, they'll just take everything down entirely. And, right, when you were a kid, you weren't thinking about that — that maybe the only thing that would keep information online is the people who originally put it there.