That doesn't follow from the facts. Rideshare drivers get around 50% of the fare (though this seems to vary from 25%-75%). And many riders tip 10-20% of the total. Most of that cost goes away if a single operator is monitoring ~10 cars. The tip goes away entirely.
An average per-trip reduction of ~50% changes the economics entirely.
I know that rideshare workers have a raw deal, but they are absolutely not paying all of their earnings towards cleaning their car and insurance give me a break. Fulltime drivers are making a living. A robot literally requires 100% less costs for living. Plus no tip.
An average per-trip reduction of ~50% changes the economics entirely.