God condemned feminine hypergamy in the 7th commandment and saw it as such a threat to society that he allowed the death penalty for it in the following passage:
“If a man be found lying with a woman married to an husband, then they shall both of them die, both the man that lay with the woman, and the woman: so shalt thou put away evil from Israel.”
Deuteronomy 22:22 (KJV)
Even short of the death penalty, women had a strong motivator to keep their hypergamous natures in check and keep would-be Alpha seeders at bay. If their husband divorced them and sent them away, they would lose their children to him and leave with nothing but the clothes on their back, no split assets, no alimony and no child support.
The sad truth is that because of changes brought on by feminism since the mid-19th century, all of these controls and checks against feminine hypergamy have been removed. Our society has actually been restructured to support feminine hypergamy.
Womens’ discontentment with men which is at the heart of feminine hypergamy is encouraged by our society. And our society actually rewards adulterous women with child custody, alimony, child support and split assets in the event of divorce.
A society which has no controls for keeping feminine hypergamy in check will eventually collapse. Why? Because without controls on feminine hypergamy marriage and the family unit have no security or stability. And when marriage and the family unit collapse society will follow.