Putting aside the fact that Tesla's robotaxi model will likely never actually ship, I don't see how you're not displacing a driver's job by operating your car as a robotaxi instead of letting it sit idle.
If the vast majority of the robotaxies are owned by normal households that have 1 or 2 of them, then that's the people owning the means of automated production. Ideally it would be the people that already own taxis getting them upgraded, but it's a lot better than corporate fleets for putting the revenue into the pockets of people.