Answer
Greenspan's behavior was profit-maximizing. However, some people might say that his behavior was despicable. In his own words, Greenspan said that he 'always valued men and women equally'. If he did value men and women equally, he should have paid women as much as men.
Work Step by Step
If more employers were like Greenspan, the demand for female economists would increase. In turn, the wages paid to female economists would increase. The increased wages would decrease the wage differential between male economists and female economists.
Other economic consultants would likely not have followed Greenspan's economic strategy since there might not have been as many female economists as the market would have allowed (to meet the equilibrium).
