If ICE cars never fail, I wonder what all the auto mechanics are doing? 282,637 automotive repair companies are currently in business, with 614,433 employees. How are they surviving is nobody is getting their ICE cars repaired?
I've had interactions with a few hundred people (at least) over 2 decades and every single person had their ICE car in the shop for repairs, small and large.
ICE cars also have major scheduled maintenance, somewhere around 90 - 120K, you have to replace timing belt and a bunch of things.
Car dealers don't make any money on selling new cars. Nobody buys a new car unless its priced a few thousand below MSRP (the past 2 years are an aberration). Dealerships make money on service. This is the same model as inkjet printers.
ICE cars are so horribly unreliable and bad, even new ones, there exist special laws just for them: lemon laws.