Yeah, one more downside of the non-dealership model. The centralized control of the sales channel really has many downsides. Absolute power and so forth...
You can buy used cars for other brands from official dealerships/stores in other countries, but not with Tesla.
Lack of competition as well as central control/coordination between Tesla stores can lead to adverse effects for the consumer compared with traditional dealerships, where competition between dealerships exists.
The entire European used car market is based on the free flow of cars from other countries (perhaps with the exception of Britain for obvious reasons). But not so with Tesla...