Its probably more to do with demographics for EVs. Currently EVs and infrastructure around it cover mostly higher income brackets that do not want to bother too much with used cars, so the market around used cars is fairly small compared to ICE that cover both high and and lower end incomes. If you are in a bottom 50% and need a family car EV is still a significant financial risk. Once EVs cover lower income brackets we will see a much healthier used car market.