Which do you think is more important to the question of service and reliability - the fact that GM sold 6.5 million cars, trucks, and SUVs last year, which was

Which do you think is more important to the question of service and reliability - the fact that GM sold 6.5 million cars, trucks, and SUVs last year, which was a down year for them, or that they only sold 70,000 EV's? GM has been dealing with global supply chains for decades. GM has been dealing with auto unions for decades. GM has been dealing with service centers for decades. Who do you think can more quickly adapt to whom? GM to Tesla, or Tesla to GM?