Because it’s easier for a woman to marry a millionaire than become one.
I once was at a restaurant with a group of fellow engineers, and one of them remarked of the attractive waitress, “nobody gave her a chance to be an engineer.” I replied that I was going to teach her calculus - on the condition that he first convince her that she couldn’t attract an man if she did not learn it.You could not possibly even attempt to broach that subject without looking like (face it, being) an utter jerk.