Why do you assume people will get less under UBI than they do now? As everyone gets UBI, at first glance it might seem that the poor will get a smaller piece o

Why do you assume people will get less under UBI than they do now? As everyone gets UBI, at first glance it might seem that the poor will get a smaller piece of the cake, but in reality a person with a good income will just give it back through taxes. Of course, some specific people might end up being worse off (like a person who gets $30k of welfare), but on average poor people should be better off under UBI. Mainly because they can work and not lose anything.