Smart business owners would advertise "we employ HUMANS", actually do so, and get many more customers who put their money where their mouth is. It's bad business to replace humans entirely with robots.
On a side note, i'm working right now full time at a landscaping company in my area. I mow lawns, do garden beds, trim etc etc and get paid a pretty decent 13 CAD/hour. I can tell you that no robot will ever take over that job. Not in the next 50 years. Nor will robots be able to pick grapes, prune grape vines, that is, any faster and efficiently than a human could.
Robots will make everything more efficient. Instead of labour used on jobs that can be easily done by robots, humans will do other jobs, and we'll be much more efficient.
Not to mention, that with robots, the manufacturing jobs that were outsourced to asian countries, will return to the USA and the developed world, only with robots instead of cheap labour. Its funny because the same people that are afraid of robots stealing jobs also oppose outsourcing.