Hypothetical questions of the form "What X would you do with unlimited Y?" are stupid because they lack realistic constraints.
Healthcare for all ($2.8T/y), housing for all ($2T/y), UBI for all ($2.8T/y), and end fossil fuel usage ($1T/y) (= $8.6T/y or 29% of GDP) if every billionaire and most corporate profits were suddenly liquidated for the benefit of people. Probably not doable to such extremes, but doing less or nothing in some areas (like healthcare) is also probably net economically less efficient than assuring everyone else lower-cost, effective healthcare.
Healthcare for all ($2.8T/y), housing for all ($2T/y), UBI for all ($2.8T/y), and end fossil fuel usage ($1T/y) (= $8.6T/y or 29% of GDP) if every billionaire and most corporate profits were suddenly liquidated for the benefit of people. Probably not doable to such extremes, but doing less or nothing in some areas (like healthcare) is also probably net economically less efficient than assuring everyone else lower-cost, effective healthcare.