gold is getting its value from so many different usages it has. from obvious things such as being used as a jewelry to small things such as usage in electronics, and other parts of science as an element. and so on. so it doesn't matter if one idiot held 1 kilo of gold, the rest of the world were still using gold as it was meant to
bitcoin gets its value from being decentralized secure and also for being a currency and for that to succeed people need to use it as a currency, if everyone just holds bitcoin in their cold storages that is the death of bitcoin in my opinion.
the turtle is gonna fall over and die!