The only missing number here is the US population (320 million). Basic income per month of $1000 gives $320 billion per month, or 4 Bill Gates fortunes.
Also interesting because the ~$80bn Gates fortune isn't exactly like tomorrow he could have $80bn cash, with the intent of spending it, like basic income would provide. I don't think there are many billionaires with even $100m cash. So, the effects of 1000 people having $1000 vs 1 person having $1,000,000 are very different, and for this reason I find comparisons of the illiquid wealth of an individual to basic income propositions incongruent.
