They don't. But those cars are also static - they have the functionality that's there when you buy them, and that's what you get for the life of the car. You want new functionality, you buy a new car. A "traditional" car, if you will. Teslas aren't traditional cars - they aren't static. They are changing, updating, new features, new capabilities. When I bought my car it couldn't just drive around town, and now with FSD Beta it can. I don't see Toyota or Honda or Nissan doing that with their cars. "Hey, your 2020 Camry will receive an update tomorrow. Just accept it when you get into it in the morning and you'll now be able to go down the city streets and it will stop at stop lights and accelerate for you."