They want everyone to, but they also know that the cost of cars, it's not realistic for that to happen. The only way even people on the upper middle class can afford to be buying or leasing cars every three years is because at the end of those three years the car still has a lot of value left to sell on to someone who is more middle class. And that middle class person will likely sell it again to someone who is a little bit lower down and at about 10 to 12 years it finally reaches someone who is poor.

The only way someone could buy a car more often is if they became a lot cheaper. That would mean doing away with a lot of the luxury parts of the car that are where the profit is.