The other side of this is when you rent, you're beholden to the company you're renting from. If the car-as-a-service company says "Car service is now $10 more per month" you have to pay that. If the company says "We are no longer offering $your_favorite_car as a renting option", you no longer have access to your preferred vehicle. Given the overhead involved in setting up a car-as-a-service company, I'm willing to bet that competition will be low, and company leverage to hike prices will be high.
Also, if the car service says, “Our opaque machine learning algorithm determined that you violated our terms of service. We cannot tell me ou how, and your account is closed. You cannot appeal and this conversation is over.” Well you’re out of luck. Hopefully it’s not the only car-as-a-service company out there.
