Billionaires don't sit on cash — Tom Ellsworth says a typical billionaire holds under $50M liquid on a $1B net worth. To pay the 5% wealth tax, they must sell $100M in assets, then pay 16% state and 23% federal capital gains on those sales. The real effective rate is 10%+, and the panel predicts 50 of California's 250 billionaires will leave the state.