I don't think Patrick is doing charities for PR or future earnings at all. He's just being himself. He doesn't plan to make a living with his skating. His coach says he would leave it on a dime. He stays as long as he is motivated and he would rather make money with high finance or business. The dude has many interests. He would like to represent Singapore in another sport - tennis, skiing, or something else.
I don't think Patrick was serious when he said that. If he does that, his parents will never be out of debt.