From the perspective of a rich abusive CEO, they probably are happy. They get off on having power over people, and they do. Plus they can make more money than they can ever spend.
People who become wealthy naturally seem to have some sociopathic traits, but generally they also don't know how to stop working. They get everything they want by doing things they enjoy doing.
I have a brother who is the CEO of a fairly successful business. He loves bragging about what he's worth, and went from watching Silicon Valley and laughing extra hard at the bit where a bunch of companies in the show are pitching how they "want to make the world a better place" to giving me those words verbatim after bragging about how much money he has. He talks about how hard his job is and he wouldnt wish it on anyone.. But I have worked with him on previous businesses, and he quite literally can't stop working (even when high and drunk at 2am). I mean he literally CAN'T turn it off.
Throughout my childhood (and still now), this person used extremely obvious domination tactics on the people around him. One of his favourite moves is to either start texting or talking to someone else while I am in the middle of speaking to him. I am willing to guarantee that having the ability to use obscene wealth to dominate people makes him slightly fucking hard.
Diddy parties only happened because famous people enjoyed them, and he for sure still has a ton of artists who idolize him (and a ton of new young ones probably do now too).
Wow, reading this has a huge impact on me...
While the definition may disagree, I would argue that language is constantly evolving, and the actual meaning of words is based on how you use them.