But the accounting difference is real. It is virtually impossible to earn a billion dollars. What is possible but still difficult is to create something worth a billion dollars which you can then sell if you choose so.

And to the people criticizing, this is cheating. To them, a billion dollars enterprise is not possible without the exploitation of employees, customers, or at least the environment.

Also, the most important thing to understand about a society is how people gain status, not just money/wealth. If you focus on money, you won't have an explanation for political movements or artistic endeavors.