I think it's all about business. They know that these system aren't fully effective if not installed on all vehicles. The point is every driver has his own skill level. Implying this devices will gradually lower this level. From one hand it can be much more safer at once. But in 5 years for example, this system is out of order, and drivers can really drive by themselves. They've used to constant assistance. In a whole, I'm against this "improvements"
The automotive market segment is too large to ignore! With the rise in consumer devices it was only a matter of time before the car would become the next digital entertainment vehicle (pun intended). I have used GPS for navigation and found it works reasonably well with some notable exceptions; I wonder how well full driver assist systems will work and what will it take to make them both safe and secure.
How great would that be to not worry about a crash with other drivers? I may take some of the skill out of driving but I would bet that the majority of drivers would rather have it than not.