Or you could argue, education is correlated with higher income, so educate people, increase their income, and hope that their abilities go up as well.
Not sure if we're disagreeing or agreeing here, but all I am saying the problem isn't always as easy as, let's just give poor people more money and education. Problem solved.
At some point we'll have to recognized these difference in people, but it's embedded deeply in our culture that everyone is created equal. Which to be honest, I love.