If strong AI exists.
Humans think they can control everything. We can't. Even if Robots were to automate everything, what happens when a tsunami hits Japan? Destroys sources of power, robots, the power grid. What do they do then?
We talk about all this "AI" as if it's close to fruition. It is not close to fruition. The "robots" Foxconn is getting aren't autonomous. They're just machines that do what they are told to do.