And what happens when many of those people are automated out of work? Too many people at the lower end of the skill spectrum will eventually become a liability

And what happens when many of those people are automated out of work? Too many people at the lower end of the skill spectrum will eventually become a liability that need to be supported with welfare. Communities will generally need to minimize the number of people that will need welfare and maximize the number of people that are productive enough to provide the welfare. If the welfare burden on the productive members becomes too high, the productive members will try to flee because they aren't being fairly rewarded for their productivity.