Several of your points don't have anything to do with CSS and are simply costs of having multiple competing brands on the markets who need to use the same infra

Several of your points don't have anything to do with CSS and are simply costs of having multiple competing brands on the markets who need to use the same infrastructure (real estate is a very limited resource in many areas). - Older X/S were never that numerous and shouldn't hold up the vast majority of the population. First movers disadvantage if you like. - Moving vehicles across the Atlantic is also a tiny tiny use case and already difficult as is.