Party officials made their fortune first and were then forced to join the party, the party doesn't make their fortune. They don't care about people, unless they get either rich or influential, and then uses their red book to reel them in.
China is the most capitalist country on the planet. The only thing they openly worship is money.
Please spend some time there and we talk afterwards, if you stick to your opinion.
China has jailed billionaires for going against the communist party's doctrine and gaining power, not for any actual crimes.