People are accustomed to the coping mechanisms: aggressive battery replacement (on a schedule / at the first sign of struggle) or letting the battery deteriorat

People are accustomed to the coping mechanisms: aggressive battery replacement (on a schedule / at the first sign of struggle) or letting the battery deteriorate until the car fails to start and then asking for a jump / calling a tow truck. People see these inconveniences as inevitable, not as the result of a missing feature that really ought to be standard. Manufacturers don't feel pressured to do better so they don't do better.