I don't buy this argument. The problem usually isn't that robots are too expensive to do the human jobs, it's that robots can't do the human jobs, period. If something can be done by machine, it is done by machine, and that's been true since the beginning of the industrial era. Entire job classifications get wiped out by new automation, all the time.
At this point, the jobs that are still done by humans are jobs that require judgment and intuition. Those things are very, very difficult to emulate in software, unlike repetitive motions and data lookups.
At this point, the jobs that are still done by humans are jobs that require judgment and intuition. Those things are very, very difficult to emulate in software, unlike repetitive motions and data lookups.