Those concerns are overblown, it assumes that the only choices will be aggressively closed cars. Even today people are swapping out Tesla management systems on

Those concerns are overblown, it assumes that the only choices will be aggressively closed cars. Even today people are swapping out Tesla management systems on batteries and motors for third party systems and avoiding the software issue wholesale. People have also hacked solutions to keep the existing systems in place. Finally regulation is a given if car makers keep down the unrepairable path. Since electric cars are mechanically much simpler they will be easier to repair and cheaper overall. Currently economies of scale have not kicked in but when they do (and battery tech improves) the most popular cars will be very cheap, lower range models with standard parts made by third parties. You need to look at consumer electronics and home appliances for the likely model, not the high-end car business model that dominates the electric car industry at the moment and is transitory.