You can say its shallow and chauvanist all you want but it doesn't change the fact that its true. Women have employed a dual mating strategy for centuries. Alpha Lays/Beta Pays.
Women seek out alpha men to satisfy them sexually. Women use beta men for their resources and as a provider. Ideally a woman will find an "Alpha Buck", both an alpha male who is also a good provider qualities, but those are not common, and those men, if they commit to a woman, will only select the highest value women. So they end up holding out for an alpha as long as they can, until they realize they won't be able to lock one down, so they settle for a beta male for the resources.