The answer lies in South Lake Union, where Jeff Bezos has posted up shop. People will need to program, provide support and customer service for these beasts. At least for right now. If Trump has his way, we will be taking all those jobs we exported to Mexico and China and boosting our manufacturing again. However, what he fails to realize, just like the computerization of our society, is that these ideas have been implimented by businesses whose primary goal is maximizing profit for the shareholders. If that means cars get produced in Mexico or service employees get replaced by robots, so be it; as long as it saves a buck!
My "day job" is in hotels. At the property I work at, we will be going to "digital" keys on your smartphone next year. The eventual goal will be to reduce staffing at the front desk and time spent by the guest checking in. If people aren't coming to the desk to check in, all you need is one person to answer phones, give info on where to eat, put a "face" to the property, and babysit the machines.
Remember, computers don't call off, threaten to unionize, ask for raises, or sexually harass other computers!