Indeed.

If people are housed, clothed, fed, educated (however basic by comparison) and they can see the genuine prospect of a better life for their children then they have no incentive to go anywhere in numbers.

Most people want to live in the land they were born in / on and they leave most reluctantly. Migration (like conquest) is driven by economics. Individuals generally do not migrate to spread their faith or ideas. They migrate in numbers in order to eat on a regular basis or to simply survive war and tribal conflict.

Face it no one ever seems to have a problem with people who come here to study at university or to invest and start businesses regardless of their racial background. Bigotry is as much about economics as immigration.