Infotainment systems are developed as a partnership (usually) between a vendor and the auto company. The hardware is often developed by a different company, I like to think of them as old-school stereo manufacturers: Bosch, Pioneer, etc. The development cycle is somewhere between 12-36 months, and that's still quite a bit before the vehicle actually rolls off the assembly line.
Many customers like CarPlay or Android Auto. Both represent a cost to the manufacturer, and require ceding the design space to another company which is very visible to the customer. Brand is a big deal for car makers, and giving that space up is hard.