I currently have a Toyota hybrid that is slowly reverting to an ICE-only after 8 years of ownership. Unless there's some mechanism in place to prolong the life of electric cars beyond the limits of their battery, I can see there'll be a lot of holdouts (young people, less well off etc.).

Regulation in the big markets such as the US and Europe to enforce a cost-effective approach to battery replacement seems essential to me. Otherwise, design will go the way of ever slimmer phones.