Why don't they just add a dock for my phone so I can use my phone's screen and control the car through their app. That would cut their costs and make me happier

Why don't they just add a dock for my phone so I can use my phone's screen and control the car through their app. That would cut their costs and make me happier. There's no way I'm paying a subscription for my car. This is as stupid as the BMW idea to charge a subscription for aircon.