I am not denying this but if the examples you cite have a passport for these countries then that makes them citizens with all the rights of citizens. To be given a passport only whilst competing is wrong. And these countries have very few foreigners as a percentage of their competing squads.
Size of population has nothing to do with it, how will Qatar build up from the grassroots competitive elite sportsmen if they circumvent the 'rules' by building a large squad of 'international' elites.
Ok I recant my point about the Chinese chess player.

I don't go to mythical places with strange men.
-- Douglas Adams, The Long Dark Tea-Time of the Soul.