Waymo is a money hole it has never got close to making a profit. Think of all that equipment attached to a luxury SUV and the upkeep. The purpose of Waymo is research - you just get the privilege of paying to be a guinea pig. There is no market for Waymo - just Google who dumps money on it.
Another important thing to think about is that Uber and Lyft are operated by people. Often these working people need the meager salary to live - wouldn't you rather support your local economy instead of being a research subject?