It's inevitable that they go dark. They piss off too many people regarding IP rights, and people hate to have proof out in the wild of what they said or did in the past. Plus a ton of other reasons; more people have an interest in it disappearing than have an interest in it surviving.

I mean, when it dies it will be a greater tragedy than the burning of the library of Alexandria (at least many of the books there were copied elsewhere), it will be a tremendous blow to our collective knowlege and memory.

But it's inevitable that it will go away.