"Problem"? What problem? There are industrious, clever, risk-taking, smart entrepreneurial people in the world who get rich, and there are lazy, stupid, parasitic, shiftless people who stay poor.
And an ever-increasing of industrious, clever, risk-taking, smart entrepreneurial people who go NO-WHERE, and their potential is never realized... This is an unfortunate effect of this type of inequality.
They have a lot better chance than the growing army of people who just hold their hand out to the government for, well, a handout, who think others should provide their livelihood just because they exist.
You want a world where success is guaranteed, and I'd like to have one where houses, cars, and food spring up spontaneously in the desert, but it aint gonna happen.