I have no idea why, but most of the champion wrestlers/body builders seem to originate in countries that form an arc that can be traced from the Balkans/Mediterranean, sweeps over the Anatolian peninsula/Caucasus and eventually winds up in central Asia/Iran.
I agree with you to some extent but WE have our own champions born here and we do not import any one from other countries to win a medal.
Qatar ( arabic country in the Persian Gulf ) imported many foreign players for their soccer, weight lifting and tennis teams to attend the Olympics.