But if you cap it there is no reason to improve things, make them more efficient etc. The world runs on greed, ambition and it’s very important for progress as long as it can be directed and constrained in a sensible manner.
Regulations need to constrain capitalism and make sure it stays within reasonable boundaries where it is a power of building things and not destructive.
Wealthy serve as a goal to the ambitious and as long as wealth can not be inherited (that needs to change) and everyone has equal opportunity to become one, it is fair.