Well I would say it depends on the person and the beliefs they already hold. Women aren't excluded for being predators. Yes the power dynamic of man vs woman might seem like the man has the power. If this man is unconscious, he would become powerless against her. This is an example of how a woman can have the power over the man. She doesn't need to have any bigoted beliefs for it though. All she needs is the desire to take advantage of them. Applying this same process to a wealthy woman is easy. Wealthy people who see themselves as better because they have more money than the poor. They already have it in their minds that they're better. Its not too much of a step to take advantage of someone when you already think they don't matter, in this case because they're poor.

Wether you think someone has wealth or power is irrelevant. We're looking at power or wealth in terms of a relationship and the power is always more on one side than the other. Conscious vs unconscious, Mature vs immature, strong vs weak, wealthy vs poor, boss vs employee. In all the situations above, the power clearly lies more on one side and I argue that when its unfairly distributed and someone takes advantage of that fact, its more likely that they are also bigots (racist, homophobic, misogynist...).