> You create a floor, so that anyone with a miserable job can say "screw you" and quit and go start their own business without having to worry about how they're going to make rent before the new business starts making money, and you get a lot more competition.

No, what you get is more and more people who will say „srew you, why should I go and do stuff when I get money for doing f* all”. The people here on HN and those millionaires / billionaires are an outlier. An average shop clerk, security warden will not go and start their own business after saying „screw you”.