You've touched on something important, though. Who defines what "success" means? If your definition of success is "what people who have a lot of money say is success", and "having a lot of money" is a marker for being in the class of "successful" people, then yes.

People whose lives align with the definition of success will certainly be more likely to succeed. But at some point we've hit a circularity, where success is defined as what successful people achieve.