Both. A person who places the interests of others above their own and lacks ambition is unlikely to achieve wealth in their life. Yet that doesn't mean a wealthy person has limitless ambition, nor does a willingness to place their interests above others mean that they are willing to sacrifice others in their own interest. While one needs to hold certain values to acquire or maintain wealth, there is still an element of "luck" to it (even if part of that luck has to be manufactured).

Take someone like Gates. He is a famously immoral businessman. Kildall once remarked that he had the urge to keep one hand on his wallet and the other on his source code listings when in Gates' presence. Yet Gates also has an interest in the human condition, something he has backed with both influence and money. I have no doubt that his rationale behind these interests differ from his less wealthy kin, but that is not sufficient reason to disregard it just because of his wealth. Now contrast that to someone like Musk. He has arguably done more for the environment by actually getting electric vehicles into mass production and he has arguably done more for science (without actually doing scientific research) through financing the development of launch vehicles. That said, it is doubtful that he has any form of grasp on reality. His morality appears to be of the sort where a pacifist wouldn't trust themselves in Musk's presence.

Anyhow, I've forgotten where I was going beyond that. Hopefully it is enough to illustrate that wealthy people have different values and that wealth should not be used as a metric of their values. That said, I'm not sure that I've convinced anyone (even myself), that some wealthy people have sensible values.