Is there a sweet spot where you still experience significant cost reductions but the inconvenience is small enough that you don't mind it? Well, certainly, for some people! But I think the number of people is going to be a lot smaller than many commentators think.
(The only cases I see where there's no increase in the rides-for-hire business after full automation is if the cost of cars drops to the point where there's very little incentive to try to reduce the costs for most people. Given that cars are quite expensive now, that seems unlikely. I can construct a scenario, but you basically have to believe that, first, the additional cost for driverless sensors+software is very low, second, that driverless software is so safe that you can drastically decrease physical safety features on cars, and third, probably that automation drives significant GDP growth).