Productivity is the root of all prosperity. Read this excellent article: http://econlog.econlib.org/archives/2015/02/always_keep_you..... Workers become on average ~20x more productive when they migrate to the first world. Because we are capital rich and we have sane government and law and order. Imagine if you were moved to Haiti and you got stuck there. How much could you contribute to society in Haiti? You could maybe slice some coconuts on the side of the road - is that gonna make the world a lot richer? Roadside sliced coconuts? Nah, much better for you to be in first world even if you're doing a low skilled job here like delivering catering to a high tech startup. That catering company is able to produce food much more efficiently, and in SF or NYC you're able to distribute it much more efficiently, and you're part of this souped-up economic engine that's changing the world. That's why they make 20x or up to 40x more (in the case of the extreme poor) when they migrate to the first world. It's better for everyone! Economists estimate that moving from the status quo to fully liberalized migration (i.e. open borders) would roughly double global gdp - that's an insane silver bullet. That's everyone getting way fucking richer in one fell swoop.

Please see my comment here for more info: https://news.ycombinator.com/item?id=9769632