Male paternal investment.
You’re missing an ingredient.
A boner favorable female to male ratio is a necessary but not sufficient ingredient for female beauty.
Due to the outsized spermatazoa-to-ovum ratio and the longer sexual market viability of men, you can never truly skew the female-male ratio enough. There will always be men who will give the less good looking women a throw occasionally.
Its not that given the choice of women, men only choose the most beautiful. No. Given the choice of women, men will choose all of them.
Even the ugly, fat woman was 18 and