Venice was a republic, not a democracy. There was no universal suffrage in Venice. There is always desire for free money - you do not need to promote UBI. This is way universal suffrage is wrong solution and why right to vote should be only for net payers of direct taxation. OpenAI's study of UBI showed, that people with UBI end program with less wealth, than controle group. UBI do not "solve poverty" problem it is just lowering retirement age to 18 yo which would brake economy.