Why do you think the 3rd world is called 3rd world if the people their make more money then us in industry nations ( aka first world)? ^^
I dont deny the existence of some very small minority making 3-5 k in a month because that is one of their main economic problems.
Their usually exist a small corrupt elite that is controlling the complete economic and military structure of 3rd world nations.
Instead of helping them with building schools and basic infrastructure (you dont even need to do that for free) the biggest nations in the world prefer to sell them weapons though.
The funny part is that if you just break that circle there would be a 99% decline of refugees and immigrants.