Comment by leetcrew

a human cleaner isn't really a perfect substitute for a robot. people might feel uncomfortable with having a human worker in their house for a variety of reasons. most people I know actually clean their whole house before the cleaning service shows up. you don't have to feel guilt/embarrassment at the state of your house when the robot starts working. I could imagine a lot of people might be willing to pay a premium for this, even if the robot doesn't do as good of a job.