The really funny thing about DarthSidious buy gold, because the economy could collapse was the fact he was buying Gold stocks. If the economy goes down it just not money that will be worthless, but any paper stocks. Gold would only be valuable if you have it in your possession. In that kind of environment possession really is 9/10 of the law. So buying gold mean buy real gold, not paper gold.
that not to say it can't happen, just that he was going about it the wrong way.