It would make a lot of sense for me that if you believe 80% of women only date 20% of men, or something like that, and a few successful men have harems of multiple women.

That you would try to change the few men rather than the many women. Why do who believe in hypergamy generally ask many multiples of women to pick better rather than ask alpha men to be happy with just one partner? This would solve hypergamy assuming we’re roughly 50-50 men and women.