What you've said is the big issue. Unless we change the economic paradigm of capitalism into something compatible with the insane increase in productivity and wealth creation that's to come, inequality will be worse and worse, but if we can collectively own all of it and distribute the benefits (the robots being our new slaves), then we can all just enjoy life a little more. There's already plenty of wealth for everyone in the world thanks to this somewhat happening. In comparison to the 80s we're so much productive thanks to automation and the internet as it is, but then we see this huge concentration of wealth in such a few number of people, it's not sustainable.
Bernie Sanders I think was our best bet to start transitioning into such reality without major conflict.
RE: How can we all own a robotic workforce? As people become useless, how can capitalism survive?