When it's for sale everywhere (I cannot buy one) and people trust it, all cab drivers will be gone. Unemployed will depend on the resilience, but unlike cars replacing coach drivers, there is not really a similar thing a cab driver can pivot to.
Yes, we can imagine a future where all cab drivers are unemployed, replaced by autonomous driving. However, we don't know when this will happen, because autonomous driving is a much harder problem than the hype from a few years ago suggested. There isn't even proof that autonomous driving will ever be able to fully replace human drivers.
Have you taken a Waymo recently? I would take it over a human driver much of the time.