Also remember that the definition of "billion" isn't consistent.
Some consider it to be 1,000,000,000,000 (a million million, a long scale billion) and some consider it to be 1,000,000,000 (a thousand million, a short scale billion, or a one milliard).
Also remember that the definition of "billion" isn't consistent.
Some consider it to be 1,000,000,000,000 (a million million, a long scale billion) and some consider it to be 1,000,000,000 (a thousand million, a short scale billion, or a one milliard).
Rabbit hole: https://en.wikipedia.org/wiki/Billion
So, whilst there are many short scale (USD) billionaires, there are no long scale (USD) billionaires. Yet.