Depending on what you mean by "rich" they're already insulated entirely, no matter where they live.
It's much easier to make sure middle and upper middle class people interact with the poor and such, but once you're rich enough to hire an assistant, you're rich enough to avoid most anything you don't want to deal with.
Note, by the way, that this inflicts real psychological damage, and perhaps we could also make the case that this should be financially compensated.