Besides using evolution

I would recommend moving into a country where not so many people are freakishly rich.

The more obnoxious and evil the distribution of income, higher the likelihood that there will be no income social strata at the top of the "piramid". In other words, in the US there are so many people whose net wealth surpasses 10 million dollars, they can afford to intra-marry. This is not the case in Istambul, São Paulo, Jeddah or Lima. Some of them will be stuck with "poor" people, like you :)

This is not a guess, the toddler-infant unit of my school is in a very expensive neighborhood, and I've seen the mating patterns of the wealthy from a very young age.