I mean, I think the only proper response to this is just a boycott or a straight ban on companies that do that in the states. It would let smaller companies slide in, or other competitors take over. Currently it's a contest between the two companies and their customers, just don't buy if they don't have the features, companies will either revert the decision or pull out of the regions.
I agree. There's not like hundreds of unknown car manufacturers just waiting for this privacy opportunity to strike so they make it big, who can then ramp up production to meet the need.. There's no way free market principles can provide a solution in this case
Capitalism always takes over, if there is potential to sell someone will step in. Used to have small car shops and stores all around, big companies came in and they all closed shop, it'll go back to that most likely, although it's more likely other competitors will take advantage of the situation and just move in instead. Especially if the situation expands to further states.
Do you really think this won't be the norm in 5-10 years? Now it's some, in a few years OP is right, so why bother with your argument that not all cars are like this at the moment?