Sounds like he's already been hit where it hurts. If his fortune is ~$3b and the stockpile is ~$6b, then he's losing a ton of money every day to interest and opportunity cost and shipping it back to Vietnam and however much the price has fallen since he bought it all, which could be a large fraction. Given how his partners have the knives out for him, he may not even have that $3b. One can stockpile, but as always, how does one bury the body?