One of those successful cases of bitcoin hodling was a friend of a friend. They (a couple) took an important risk by investing 60k of a dismissal compensation into bitcoin and making a x100 on it before selling half. I do not know what they did with the rest. Now, these people were not rich, they took an enormous risk compared to their total wealth. They had to really believe on the project and pass though some of bitcoins usual "tests of faith".
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?
It is given mate, you can totally hold when you are rich because you have more money to risk in long term not like many of us in which struggling to find our funds to invest and hold so we are limited in this process.
while rich people can spend half of their asset to buy bitcoin and keep it hold for years and years without bothering where to get their food on the table.