I am tempted to say "personal servants for the rich" and I am only half joking. As you say, history repeats itself.
On a more personal note, I find this commonplace bigotry against the working class to be appalling and indicative of limited and closed minds. The idea that there is this huge labor pool of second class citizens, gammas or such-like, that is barely above the level of trained chimp, and their skills are so minor it's just a matter of time before the smarties of the world replace them with superior robotics, is disgusting. It is a fantasy. And worse it's a very derogatory and prejudicial fantasy.
I agree with you though that given the right incentives most people can learn new skills. I don't think they are inherently stupid at all, the mindless routine of their work just naturally limits them intellectually.