I would say maybe the "successful" ones, not all of them. After all there are a lot of people who suck at what they do, and they will bankrupt and those people are not really that smart. Don't get me wrong, you could be a person who has a great successful business and still be a moron, or a person who bankrupt and still a smart person, what your business does doesn't define you if you ask me.
However, more likely than not, if you are smart and have a successful business, you will just keep that going. Wealthy people know how to use debt, because they can, they are allowed to, nobody will give me debt the way they give it to some rich person, if they did, I would have been rich by now as well but we all know they won't do that.
I don't think they are paying, but rather not optimal in carrying out the things they do and producing less than good results. In the world of course there are differences, it's impossible for everything to be the same, including those who are smart, of course that doesn't guarantee they will be successful and for those who lack understanding or are stupid, they can be successful, don't think that it's destiny because success can be achieved by those of us who do it well. , apart from that, success is not limited only to rich people, of course those from the lower middle class also have the opportunity to be successful as long as they are willing to fight and try.
When they are successful, of course they will be able to manage everything well, even if they can't, they must be able to manage it well because that is a must to keep the business running smoothly. Business success can be achieved by anyone, whether poor or rich, but it will be easier for the rich because they have a larger budget. with those who are poor or have lower middle class finances, they will find it difficult to develop.