Some people are sad and unhappy and they can't find purpose in their lifes.
Hard to find happiness and even to communicate with other people we tend to think the super wealthy are charming and extraverts but often they are alone in their mind and introverts when they have hard enjoy normal life and they struggling to boost their dopamine levels in brain so they fill that empty void with money and wealth and even the expensive items wich they don't need even but material and greed and big wealth is only thing that can just little boost their brain dopamime levels but even the super wealth not enough.
So while they struggling to live normal life and they feel uncompfortable to communicate with others they can find their temporary happiness only from huge wealth and greed but even then when they see someone got more wealth then they have then they not happy and want to be better.
And they can not see that anyone have happiness of normal life because they can't feel happiness feeling so for them to be happy or with just normal mood they need a lot more , since they lack of social skills with others the only way they can get their happiness level is by greed and wealth and the feeling that they have more than others.
Most of the rich and wealthy people are not with just normal psyhology they have mental problems and anger issues and bad mood often.
This comes from the people who often been around with very wealthy people, like Elon Musk
So If we see very wealthy people it's not because they want to be wealthy but it's because they need to be there is no other way for them because they have hard times to be in normal conditions also they can't work with normal jobs together with normal people as they have anger issues.
Contrary to popular opinion wealthy people are not sad and most of them don't have mental health issue as we want to perceive. The truth is whether rich or poor everyone is dealing with an issue or more, life gives us our own fair share of struggles and no matter what you own here, you won't be exempted from challenges. Wealthy people do not fill their void with wealth simply because they're wealthy but with a higher status comes more expensive requirement that's the reason they will always strive to get more not because they're greedy or empty but because with a little sleep, a little folding of hands poverty with embrace you like a cloak, so as sad as it seems that's the rat race we're all involved in.