Here, though, is one heuristic. Given a free market–which is to say one in which the government has not been corrupted into protecting or actively supporting monopolies–a rough sequence of events can be stipulated. To create one free market billionaire you have to create, say, 10 people worth 100 million, 100 people worth 10 million, 1000 people worth a million, and ten thousand people making $100,000 or more. These are very roughly, say, Facebook, or Google numbers.
Now if resentment outweighs self interest, you can enact policy to ensure no billionaires emerge, at least through the natural operation of free markets (Communist regimes, obviously, create very big winners, which is not hard when you can take money from anyone you like and give it to anyone else). Logically, if you prevent the billionaire, you also prevent everything downstream. You create Venezuela. You create Zimbabwe. You create the Soviet Union. Nobody has anything. Everyone is poor. And you STILL have huge income disparities, because some pigs are more equal than others.
Base your life on a positive vision for yourself, not envious resentment of someone else.