Leo is one of the four kings of the constellation. Why are there so few successful Leo?

Because most lions live in their own world, for them, success means a happy family with food and clothing. There is no need for everyone to have the right to be rich. For them, compared with the intense life of intrigue all day, they don't enjoy slow life so freely, and they don't like publicity, so most of the "winners" you know are not lions.