> What if you want, say, a human hair stylist or therapist: who would do such a job if they don't have to?

I have no faith in Musk's vision of an abundance utopia for many reasons, but I suspect a lot of people would still want to do the job of being a human therapist or hair stylist even if they technically didn't need to for money.

They may want to work less than 40 hours a week, but most people do have an inate need to feel like their life has some sort of productive value beyond just base level existing.