I assume that is it. That work is the thing they love?
[...]
If you don't like what you do you'll probably "quit" long before you get to billions. But if you love it.. Its not "a job". Can't imagine it I suppose
For sure, like if work is working in a random IT job or working as an accountant then many would maybe quit if they won say 5 - 10 million on the lottery.
But alternately some accountants do really well and become say partners in a big accounting firm or become CFOs in a big company - they don't necessarily quit at 5 - 10 million net worth, their work has changed, they're not doing grunt work anymore, they've got a bit of status etc.
If someone is say in their 30s or 40s then what are they going to do if they suddenly get a few million - maybe take a world tour for a year but then what?
Maybe the wife wants a cafe/bookshop. Maybe when buying a nice house in the countryside they end up with a small hobby farm or some holiday cottages they stick on Airbnb.
So they're back to "work" again but it's not grunt work, it's being the boss of a (small) business doing something they enjoy.
I suppose as little people we just wonder why the multi billionaires don't spend a lot of it on doing good in the world, rather than just making more and more cash.
Some do of course.
They typically do - Warren Buffet does and Jim Simons did make big donations to charity.
But a stock market trader is a bit of an exception in terms of making cash, most billionaires aren't making more and more cash but rather the stock they own in the company they founded is increasing in value and that's a reflection of successfully doing something useful.
Not all charity work is particularly efficient or effective, it's seen as noble and say Jeff Bezo's ex-wife will get loads of positive publicity for donating a fortune to a bunch of charities and nonprofits, it's questionable how much good multiple millions spent on some diversity or immigration-related non-profit will do. Whereas Jeff himself has built a great business - that is in itself doing way more good in the world through providing useful products and services and providing employment for over a million and a half people.