Maybe because of the Toyota experience recently with Prius [and its alleged 'automatic acceleration' woes], but you would think that the automakers of the world would have taken to outsourcing their electronics in this area by now.
After all, it is quite common in the back pages of AutoNews to see a ‘Where Was It Made’ schematic breakout of various car models, detailing where most parts of that car are made, and the parts-supplier company that made that item [since so much is in fact outsourced, which most consumers don't realize or pay attention to.] So why not their Infotainment systems?
Of course, then again, since these are also really the new toy to play with, maybe the OEM’s have just not arrived yet at the conclusion they SHOULD be outsourcing these fully, and soon. Or, maybe after the difficult, unfortunate Prius situation, there is hesitation. Maybe these systems become so intertwined into the car, interconnected into its most basic core, that it is seen as proprietary, and they are unwilling to relinquish that much control. A fair point, even though they essentially do this with things like power trains, tire technology, and steering/cooling elements.
But let’s get real: Until they can offer up a system as cool as the iPhone/iPad, or as universal as Android, they are fighting a battle that will not end.