Smart women have often drawn the conclusion that sugar daddies aren't worth it. If you allow someone to buy you, he's going to think he owns you. Smart women know it's a hell of a lot easier to figure out what you're good at and make your own money than it is to entertain some tyrant. This frees you up to see a nice guy, whether he has money or not. Smart women have also freed themselves from the psychological need to be dominated by their men.
Smart women like to feel powerful themselves, and appreciate men who can handle that.
I have an architect friend who has an even better line. Smart women know that being a jerk doesn't make a guy exciting. In other words, smart women are no longer attracted to the bad boys. They've been out with all the bad boys. Been there, etc.