I just don't see value in the satnav being built into my car. It will be older tech very quick, much more expensive to replace, and you're stuck with it.
Which is exactly the value offered by Android and Apple car integration. Both can offer superior mapping at lower cost than an auto maker. Phones are easier and cheaper to upgrade. All the car needs to provide is a display and audio.
Of course, if you sell a car with built in GPS you make a killing on the initial sale with the potential to do so another couple of times through the life of the vehicle if the end-user wants map updates.