Anything where you bet on the future price of something is a crap shoot. That would include real estate, gold, pork belly futures, or digital currency, as well as the more familiar stock or bond markets. Not true. A crap shoot, rolling the dice, is pure chance. There is no information available. With every asset on your list there is information available. In the case of gold, diamonds, and digital currencies they are manipulated by entities or people who own enough of the asset to manipulate (or just affect) the prices for their own benefit. I am jealous of Jeff Bezos though. By luck, he sold over $4B of Amazon stock right at the price peak before the virus correction started. He still has lost many billions on what's left, but it still looks awfully lucky. ;)