The number of people that can achieve this is limited, as even if a person will become wealthy, it is not as if they can stop worrying about money completely as they need to make sure there is enough of it for them to live the rest of their lives
That is true and it is why we see the rich people keep on hustling and working because they have been used to it and they want to make more money. I think that there's the common mindset from all of the rich people that they think that money is not unlimited and that's why they're working for as long as they can and growing their money and let it work for them.
while at the same time they want the next generation of their family to start their lives in a better position than the one they had to start with, so most of the time this means they will have to work just like everyone else until they reach their retirement age.
This, they make an empire so that the next generation from the family that they create will continue on with the legacy that they have started. Now, whoever inherits their wealth, business, assets and any valuable things and they're not able to grow or at least maintain it, there's something wrong with those people. Because they didn't worked hard for it and it's just a passed on wealth, they didn't take care of and those types of people will surely be hated by their forefathers.