I figure it has more to do with the fact that the ICE car comes with a lifetime of engine and other maintenance that the dealership is looking to cash in on long after the warranty is expired. Even within the warranty, EVs don’t need oil changes. Just brakes and tires, which are done much less frequently. And after the warranty, it’s a long list of minor repairs to engine components, not to mention supporting all the emission control stuff. It’s a gravy train and they don’t want to get off.