It's certainly an area which should be restricted to native speakers.....

That is up to you. Many would disagree. Then you go on to say.....

One has to be reasonable, so i have nothing against a Chinese owning an English Training
Centre in China, because a Chinese can still have the welfare of his students as a big
consideration; but if you have an Egyptian owning such a school in China it merely reeks
of money.

Nothing but your pro-China, anti-arab, anti-muslim bias shining through. I bet your wife has influenced your thinking a lot. Total hypocrisy, so on the one hand only native english speakers should teach english, but it is ok for Chinese to own training centres as they can make money and somehow understand english teaching better than foreigners. Grow out of yer box!!!!!!!!!!!