Because OEMs want you to be their puppet. So they need to remain in control on the "cars" the sell, to resell driving data to insurances, video to various third

Because OEMs want you to be their puppet. So they need to remain in control on the "cars" the sell, to resell driving data to insurances, video to various third party (including porn ones) just to cite recent "scandals", and they need to justify the absurd price of new macro-bugs on wheels. Unfortunately most citizens do not even understand the tech so they do not even know that the crappy car-app is actually connected to the OEM servers like the car, they do not even know the car collect gazillion of data and so on. So the OEM can do pretty whatever they want, the percentage of people who understand is so little that nobody hear them.