This is what a lot of people don't get. The magic genie that lets you wish for more wishes isn't a a rack of GPUs in a DC somewhere.
It's a domestic robot that can do full maintenance on another domestic robot.
Self replicating machines are the genie that grants you more wishes. They are the genie that can turn that land, energy, and precious metals into copies of themselves.
What happens when the genies realize that the meatbags that require 3000 kilocalories a day are just a net drag on the whole system?