If you try and rob the bank the robot instigates a lockdown and maybe even taser the would be robber. Vision and details would immediately be sent to law enforcement and then Robocop would turn up. Hahahaha a great new world coming lol.
I'd just send my Robot drone to rob your robot bank !
Seriously, if we get to this situation (and I think it highly likely) then you will have a situation where only 20% of the population have any productive capacity. They will earn all the money and be taxed huge amounts to support the other 80%. With their welfare, the 80% will then buy good and services off the rich 20%. At some point the richest are going to realize this is an absurd situation an "solve" it somehow.
I don't know what the solution will be, but the laws of economics and evolution are pretty merciless