When everyone invests equally in getting to the top 5%, because of how competitive it is, then it results in people maintaining their same spots as before on the leaderboard.
Also you can't improve things like height which is one of the most important things women care about.
>there's very little you can do to make them look at the top 50% of men
Historically it's been solved using religion and families enforcing monogamy in society, like in the past 2000 years of human history, to ensure most men and women get to find a pair to make a family and giving them a relatively equal opportunity/stake in the future of society as an incentive to help maintain and defend it.
Without these traditional enforcement mechanisms, I guess we can explain them the math that if they wish to find happiness and not die alone surrounded by cats, then they can't all share the same top 5% of men, and so will need to settle for a realistic man in the same league as them, instead of waiting for gigachad because their biological hypergamy instincts tells them to.