Arbitrage, it is not just for hedge funds.
And by now, everyone south of the Mediterranean, or south of the Rio Grande, knows that North America and the EU are not the land of milk and honey. They know what to expect, the price to pay to build a better life.
Half of my friends here are sub-saharan Africans, most of whom came illegally, a bunch of which came on the dreaded pneumatic boats through Libya, Morocco and Turkey. One thing is certain: they know an opportunity when they see it and they'll hang on to it. They left their friends, their family, their weather and their food behind - they work to make the adventure worth that.
Most fun is that, in practice and not in theory, the French government recognizes that: come illegally, work hard illegally, prove that you don't depend on the state for survival and, in practice, you'll have residency within about five years. It is unwritten and cannot be expressed openly for fear of a xenophobic backlash, but that is administrative reality in France.
I could wax lyrical about "land of opportunity" but yes, it is about working to achieve potential, in conditions they don't find on their home market.