Malaysia are going brunei way in regard to non-malay population, albeit more slowly. The cainis and other non bumi population are declining. Several factor contribute to this such as the migration and the cainis tendency to marry late and preferance for only few childrens. But i marvel at Thailand. The thai and non-thai blend so seamlessly, you cant tell one from another.

Not quite. China is traditionally an agrarian society, add in the corrupt and repressive government. But many of the most enterprising Chinese peoples migrated oversea. That's why oversea Chinese seem's more successful then those in Mainland.