> This is mostly a good thing, if this wasn't true, somebody would have set up a site that was a safe haven for child porn, and there'd be nothing that anybody could ever do about it.

I doubt it is true, and I'd assume people have set up a site. If the media industry failed to exterminate torrenting with enormous economic incentives to do so why would the crusade against child abuse achieve more success? It isn't technically possible to stop people communicating with each other over the internet.