I think the ongoing hosting cost of any given article is incredibly close to zero with the exception of a very tiny fraction of popular articles. The popular ones obviously deserve to be there as evidenced by their popularity alone. Maybe there is something I'm not taking into account but I have a hard time seeing the meaningful cost of some obscure wiki page merely existing.

If that's the intention, fine. But don't be surprised when no one but the most committed politicians want to bother trying to contribute to the project.