And bugs, and DRM, and mass surveillance, and giving the power to the state to abuse even more of the tech, and giving police super powers, and giving bad actors (terrorists, assassins) the abilities to kill you with a virus, and the general concentration of power that this implies.

This is a terrible idea, and that's why I have mixed feelings about the robo taxi. On one hand, it's a great resource-sharing tech. On the other hand, all of the above.