... why in the world doesn’t everyone do it this way?

The answer to this question is simple, but hard: Elon Musk and Martin Eberhard (co-founders of the brand) had a similar experience with a well-known fossil fuel vehicle brand. Their vehicles were stranded in the garage and the well-known company did not respond to their needs. If you pay for a service, a guarantee, you must have everything in your favour; it was from a bad experience that the Tesla venture arose, its fundamental principle is “total customer satisfaction”. I know a friend in Spain who bought one of these vehicles, and it arrived with some damage, and in less than three days, they had already exchanged the unit for a fully functional one… Other companies, their motto is to get rich, but Tesla is already rich from the cradle…