That would sure ease the pain on our end, but it's hard to make the case that it would be better, or that we deserve the special treatment.. If Mr Smith in the US has $10,000 of disposable funds, he's likely to find that the highest use is to buy himself a Lexus SUV instead of a Honda SUV. The same $10K spent by Chinese or Colombian peasants might buy 1200 solar-charged reading lamps so kids in 1200 families can study at night, or to dig 3 wells for villages, or to allow 20 families to buy a small motorcycle so they can get to the city. Any of those uses increases the world's "total happiness" a lot more than Mr Smith's Lexus SUV vs. a Honda SUV.
And the same case can be made within a country--lower-income folks probably get more marginal utility for each dollar earned. As long as everyone is actually earning the money by performing a service valued by others in a free market, the whole thing works for everyone's benefit.