Unfortunately, all of the labor market arbitrageurs went away, and now we're stuck in this weird economy where women get paid 83¢ on the dollar for identical work performance, in an economy that is deeply entrenched in boundless corporate greed, and yet no major companies appear to have effectively capitalized on the free, automatic, statistically-guaranteed 17% ROI that's just sitting on the table by replacing men with women. I guess our laws against unlawful gender discrimination in hiring must be so strict that no large companies have ever been able to do it at scale without getting caught and fined, no? How else do you explain for-profit companies turning away free money?