My point is that I don't think many people would take that option even if it were available. I know I wouldn't, unless the costs to own and operate a private car went up drastically, and even then, I see it as more of an augmentation than a replacement, i.e. maybe I own a single car instead of two, and use cabs for most trips.
There are some realities I think get overlooked. For example, I have a family of six, plus a dog that can't be left alone. How do I go about getting where I need to go in a fast and convenient way? Let's say I can't afford to live in the dense city center, and like most people, I live in the suburbs. Barring some huge shift in politics, infrastructure, and major advancement in AI, what is my motivation to give up my minivan?