That hasn't happened yet though. Stock brokers, on the other hand, once the quintessential white collar job, have been completely replaced by automated trading algorithms.
But coming back to stock brokers, is there an epidemic of college educated stock brokers ending up unemployed due to automation? I don't think so and that's because they have other skills they gained from their education. Automated trading algorithms don't make stock brokers useless in the same what that automated garbage collection doesn't make programmers useless.
ED: yes, they're not perfect but give it about 20 years. I'm pretty sure we won't have human cleaners by then.
Have you ever had a cleaning job?
A Roomba isn't going to solve your cleaning needs, not even by a longshot.