As mentioned here previously, automation is rolling out in the service industries. It's bad news for the burger flippers demanding their $15 an hour minimum wage (or more), who don't appear to understand that if their demands are met, they'll have effectively killed their only source of income. Low-info, unskilled, uneducated - their only option lies in service industries. And they can be, and will be, replaced by automation.
We're seeing it already in places like Applebees, where ordering dinner and drinks is being done through tablets on the tables, as is payment. Expect a huge shift toward this format as unskilled employees price themselves out of a job.
Of course, high-end restaurants might continue to use human servers as a novelty or special attraction for their upscale clientele. Something a bit more artisinal.