Of course they are constrained by battery supply as a primary reason. The second reason is EVERY SINGLE EV hurts their dealers, because the maintenance is so much less. No spark plugs, mufflers, less use of brakes because of regen, no tune ups. They can still go wrong but so much is not needed in evs. Dealers make most of their profits from maintenance, and thus - they don't want them.
No, maintenance is generally done by separate auto shops. These do sometimes license the brand to become "authorized" but they definitely have nothing to do with car dealership.
Sorry but i disagree, this is widely known. A neutral article says half of dealer profit comes from maintenance. It doesn't matter that a lot of maintenance comes from outside shops. At the dealer, lots of profit comes from maintenance and that's drastically reduced with evs.
https://www.edmunds.com/car-buying/where-does-the-car-dealer... "So where does the majority of a dealership's profit come from? It's not from car sales, at least not directly. It's from the service and parts department, which accounts for the other 49.6% of the dealership's gross profits, according to NADA."
We'll know they're really committed when they stop making gas/diesel cars (which they've said they're planning to do eventually).