” One of the problems with polygyny is that it non egalitarian. The rich guy can have many of the most beautiful wives leaving poorer males few options beyond homosexuality or prostitutes.”
from the female perspective, a woman with less than ordinary looks but with other skills in bearing offspring, or managing the household budget, or good with children, or a good cook or housekeeper, etc. who might not have had the opportunity to marry because she wasn’t pretty enough, might find her marriage niche exactly suitable for a polygamous marriage.
I can list 10 third-world countries just off the top of my head where those “poorer males” would appear to be millionaire tycoons to the native single women.