Of course, I am sure I am missing the bigger picture here. As EV's become more of a consumer electronic and refresh cycles of 2-3 years with significant advancements, CPO can be a big deal. or with fully autonomous cars; dealers can be spun off with Uber-like services to provide on demand transportation to people with "timeshares" of a car. or whatever... I just like to day dream....
Tesla won't sell through franchise dealerships because the company is trying to vertically integrate.
dealers (Tesla owned stores and galleries)
gas stations (Tesla Superchargers)
repair shops (Tesla service centers)
insurance (Autonomous Driving)
software (Tesla's in-house software)
gigafactory (battery and energy)
taxi/truck drivers (autonomous driving)
stereo aftermarket (17 inch screen)
aftermarket body parts (can't really happen with all the sensors in the bumper and body panels)
Tesla is different from other American car manufacturers because they are outsourcing as little of the entire vehicle as possible.
What makes Asian car manufacturers like Hyundai competitive is the fact that they are completely vertically integrated. For example:
When you buy a Hyundai(in Korea), Hyundai controls every aspect of the car:
hyundai steel (produces the steel for the car's body)
hyundai motors (automotive production)
hyundai mobis (parts supplier)
hyundai globis (car shipping and logistics)
hyundai ships (container ships)
hyundai containers (containers and shipping)
hyundai oilbank (gas stations)
hyundai insurance
hyundai apartments
hyundai dept stores
hyundai oil refineries
When you buy a hyundai in Korea, you get gas from a hyundai gas station, the car is built from hyundai steel, you park in a hyundai apartment and drive your hyundai to the hyundai department store. While Tesla may not become this vertically integrated(US anti-trust laws), allowing outside dealerships doesn't fit their goals.
Tesla is trying to vertically integrate the entire energy and transportation industry(from solar panels, to stationary storage to vehicles). Thus, they will probably not just give away dealerships when it appears like they are trying to control all aspects of the energy/transportation industry.