What would you call the state of affairs where only 10% of people own cars and the rest make temporary use of those cars through rental? Would you not call that a dramatic move away from private car ownership? And that is a plausible if distant state of affairs which this enterprise is moving us towards. I think your objection is just a pedantic trick and not substantive.

>But Getaround doesn't want the hassle of owning the cars either; it just wants to collect its cut and leave the hassle to others.

What is a middleman? You make it sound like the "others" in that sentence are getting a bad deal compared to what could be, but what's the alternative? Someone build and maintains a ride sharing app for free as a charity to benefit middle class commuters?