It's pretty far fetched. There's money in service but not for VW or any other OEM. The dealers make money on service. The OEM makes money on cars and financing. It wouldn't surprise me if subtracting warranty from parts sales resulted in a net negative for many models. I'm painting with a broad brush here but that's the gist of it. Going all EVs would simplify a heck of a lot of things for the OEMs.