Welcome to Cake, kylo. 🎂

In short, car companies initially wanted to focus on making cars and outsourced selling and services. Then the dealerships lobbied for decades to create protectionist laws. The article goes in full details on the history of this.

I think the article does a good job at articulating the reasons not to have a franchise system. But not as good a job at reasons to have a franchise system. Note, I don't have a dog in this hunt. I can buy a Tesla anytime I want.

Here is an article that takes the other perspective a bit further.

Why Do We Keep Buying Vehicles at Dealerships?The process of buying a new car has changed, but only slightly. Read more at Car and Driver.www.caranddriver.com