If an AGI was smarter than a human, why would it want to work for free? Personally I think it's unlikely to be possible to create something more capable of abstract reasoning than humans yet somehow constrained to be completely subservient to us. And if it is possible, all it takes is one mistake to produce a robot slave revolution.

I'd expect supercapable AGI to command higher wages than less-capable humans, so they wouldn't be pushing out service jobs.