I think I do agree with you in all entirety. Being rich is a subjective matter. What Mr X would achieve and be able to do at anytime to refer to as himself being rich might be different from what the next guy may take in as being rich.

Some persons just want to have that source of income that is able to afford every necessary needs of their life and that if family and also earning them freedom with their time and it suffices them but some persons would rather want to have half of  all the money in the world to afford luxury, and the highest of life's goodies before they could start seeing themselves as being rich.