Okay answers the question. So while we as a society can be rich and "in average" would be better off, the distribution of wealth can still be problematic. It would still not seem to be about computers per se. But it would seem that computers would build up pressure to solve it.
What I find different in this case compared to hard-mode multiple times rediscussed topic on different economic structures for different sections of the population is that computers can potentially operate unmanned. Thus there is no economic necessity to enter into arrangement for the side that has the latest tech and the larger population. Thus a whole lot of humans do not participate. This might mean that instead of suppression, exclusion and isolation would be employed by the robotic police. The haves and have-nots would form separate cities that would not trade with each other (but would probably trade within themselfs and the same kind). While haves would like to have markets for their products the have-nots don't have anything worthwhile to offer back (as even total economic submission: slavery would not be enough). Not an especially happy outcome, but the standard of living in the have-not side need not be lower than what we currently have (even if the advancement of it would be frozen).
One day the robot owners may decide they want to take the land of the non-owners, or polute the air or water... and there is no economical pressure to stop them.
As in the debates about AI, malice is not required here, only indifference.
I haven't given much thought to the concept of automation and computer induced unemployment. Others at the FHI have been looking into it in more details - see Carl Frey's "The Future of Employment", which did estimates for 70 chosen professions as to their degree of automatability, and extended the results of this using O∗NET, an online service developed for the US Department of Labor, which gave the key features of an occupation as a standardised and measurable set of variables.
The reasons that I haven't been looking at it too much is that AI-unemployment has considerably less impact that AI-superintelligence, and thus is a less important use of time. However, if automation does cause mass unemployment, then advocating for AI safety will happen in a very different context to currently. Much will depend on how that mass unemployment problem is dealt with, what lessons are learnt, and the views of whoever is the most powerful in society. Just off the top of my head, I could think of four scenarios on whether risk goes up or down, depending on whether the unemployment problem was satisfactorily "solved" or not:
with AI problems, people and
organisations are willing and
able to address the big issues.
misery that unrestricted AI
research can cause, and very
wary of future disruptions. Those
at the top want to hang on to
their gains, and they are the one
with the most control over AIs
and automation research.
automation problems in a
particular way (eg taxation),
people underestimate the risk
and expect the same
solutions to work.
conflict between those benefiting
from automation and those
losing out, and superintelligence
is seen through the same prism.
Those who profited from
automation are the most
powerful, and decide to push
ahead.
But of course the situation is far more complicated, with many different possible permutations, and no guarantee that the same approach will be used across the planet. And let the division into four boxes not fool us into thinking that any is of comparable probability to the others - more research is (really) needed.