For someone with let´s say, a net worth of 1M USD or more plus house, hodling 60k until they became 6M would have been not that much of an stress. Do you think it was easier to benefit economically from bitcoin if you were already a bit up in the ladder?
Of course, this is an easy game for them because an ideal investment cost in crypto is just a small amount of money for them, so it makes sense for them to simply hold it until it becomes a million. You don't need to be afraid because it's only a small amount of money and you have plenty of cash in the bank, so being wealthy gives you an advantage in rapidly growing markets like crypto right now. So that's an added benefit, and of course you'll be one of the whales who can influence the market when engaging in a market activity such as selling or buying.
They wouldn't mind if the investment failed because they still have money to invest in the future. Those who already have passive incomes see cryptocurrency investment as a sideline.