You obviously haven't thought deeply about the unit economics or network effects.
This has nothing to do with lidar at all.
A Tesla Model Y already costs well below $50k to put in service as a Robotaxi.
Waymo's current iPaces are rumored to cost ~$200k as deployed.
Tesla already manufactures well over 1 million cars per year that have all the tech to become a Robotaxi, so they aren't limited by vehicle supply to grow their service.
Even if you assume that Waymo can HD map every city they want to deploy in at 0 cost with extreme speed & that their software is equally good if not better, they are still severely limited by vehicle supply.
They will only be adding 2000 cars over the next year, at which point they will have to switch over the Hyundai platform.
Hopefully that will be cheaper & faster to deploy, but there is no path for that to be anywhere near as cheap or fast to deploy as a Model Y, much less the Cybercab which should be starting production in that time frame.
So sure, Waymo can continue to grow, but sometime in the next 12-18 months their fleet will be a tiny fraction of the size that Tesla's is, and losing ground fast with no possible way to ever catch up.
In the limit, the ridehail business will be decided by three things. Cost, safety, and availability.
All three factors are improved by scale.
So Waymo will always be at a disadvantage relative to Tesla in all three of the major metrics that consumers care about.
So while Waymo absolutely can & will grow from here for some time, it will never be able to generate significant profits.