Buffet says that his investments are at a huge scale. It is hard for him to make huge gains based on how much stock he is purchasing. However for a regular investor, he thinks there is ample opportunity at a small scale to really clean up financially.
Buffet plans to give away the majority of his riches when he dies. He has partnered with Bill Gates to distribute the funds to worthy causes. Buffet's kids won't get rich from their dad's money.