You missed an option: There are "unethical people" that would discriminate for women to get rich, but for whom other prejudices against women are too strong, s

You missed an option: There are "unethical people" that would discriminate for women to get rich, but for whom other prejudices against women are too strong, so they don't... I'm not saying that this is the case, just pointing out that you missed options that would allow the hypothesised discrimination to exist.