While I was being slightly flippant in that, I note that your example of $300Bn as being a completely unreasonable, unachievable number for UBI is less than half the US military budget, and in fact represents about the increase from the pre-9/11 post-cold-war low point. Also that most UBI proposals involve fiddling with the tax bands so that above-average earners see much less or no net increase.
"Do you want $1000 each for twenty years or a war for twenty years" was of course a question that was never on the table in 2002.
According to [1] the top 3% (>250k USD household income per year) earn in total per month
needed to fund your ubi. Maybe it's not enough to take from people with more than one megayacht?[1] https://en.wikipedia.org/wiki/Household_income_in_the_United...