Waymo has chosen to monitor travelers in a way that drivers of their own cars would not be monitored, while the government has chosen to ban privately owned vehicles from some spaces (like Market Street in San Francisco). This coerces individuals into sacrificing privacy and other rights.
Imagine if your phone company listened to all your calls and reported you to the police if it didn't like something you say.
And what happens when a private company like Waymo partners with a municipality to integrate into its transportation network? Is that now privately operated vehicle or part of a public space system like a sidewalk or the road itself?
Waymo is not like mass transit or even a taxi: only one group of passengers are in the vehicle at a time. Subway and bus rules don't cleanly apply. It's closer to a rental car that drives itself.
We as a society are turning to rely on or even require private companies for much of our essential infrastructure and interpersonal fabric: communications, payments (decline of cash) transportation, surveillance (Flock), places of congregation (virtual town squares), etc. Meanwhile because they are private they are not bound to privacy and other protections like the state itself.
We should rethink this direction.