Not comparable at all. Autonomous driving isn't obviously a viable business. It's not because computer programs can't drive well, it's because the and workforce infrastructure required to maintain and operate the expensive fleet may be less efficient than a human maintaining their own vehicle.
Isn’t the implication there that Uber works because the drivers shoulder more costs and make less money, but Waymo won’t work because they have to shoulder all the costs?
I'm implying that drivers are more efficient at cleaning and maintaining, refueling, storing, repairing, and replacing their cars they own than the complex systems of personnel maintaining a much more expensive fleet of cars they don't own or give a shit about.