Robots being able to perform any task a human can do, physically, doesn't seem that far off. They would be powered by AI of course.

The question is: do we still have to work? If not, who will take all the wealth?

We thought the washing machine would have giving us so much free time, because it used to take a full day a week. Instead, we only got more frantic it seems and started putting in more labor. But what will happen when that labor is worthless?

In a dystopian world, the elite may be better off just killing the lower, middle and even the higher classes. Keep just enough people to have an interesting gene pool around. Because even in the space mines there will be no need for human labor anymore.