AGI is kinda like Star Trek futurism, where you wouldn't actually need cash, you just get chits for use in the assembler. As a society you would just be waiting around in realspace waiting for the AI to come up with solutions to n-compute problems.

I think a bigger problem would be humanity in trying to get away from baser instincts, drugs and self depravity. It sort of goes into Brave New World, where Soma is the better drug and it leaves people harmless and willing to exist safely as opposed to something else (like crime).