Do Language schools need native speakers?

A school here is looking for "native English" teachers. Ok, beside the fun part that they actually mean native English speakers as teachers, I think they are wrong for another reason. It isn't always good to learn from a native speaker, because he doesn't really understand your problem. People need English to communicate, and if some Australian comes with an strong accent, they won't understand him. Native speakers do have the problem they they can't put them selves in your shoes. But for most of the private schools in Asia it doesn't matter if the students can speak English afterwards. It is more important to have native speakers and shiny certificates.