Negatively, it can be the eternal pursuit / addiction to more power and money.
But actually, working, regardless of economics is fundamental to good mental health and happiness.
There's a lot of research that kids who are handed everything in rich families, not expected to achieve anything for themselves, tend to go off the rails, be depressed, have addictions etc.
And perhaps these people have a real sense of purpose about their bank, the responsibilities of taking care of people's money, etc....
They do have the privilege of work not needing to be a stress about paying the bills, but that doesn't take away from the fulfilment of being active, having ambitions, purpose, building and using skills etc....
The part I don't understand is when people are into their seventies or eighties and still pursuing power or working when they are rich.... that strikes me as an addiction - surely by that point in life, you would just want to rest, relax and enjoy the fruits of your labour!