Switching to something new usually inherently costs money. (Capital expense) If you are scraping by, you can’t afford another $500-$1000 a month car payment for a new car.

The option to convert an older already paid for internal combustion vehicle basically requires another $10k minimum, not including any regulatory stuff and that would be parts cost alone, no labor. Add to that regulatory/local registration issues with the diy route and you basically bake continued demand for fossil fuels into the system.

You can mitigate some of that by doing public transportation but you have to have a functional system AND an public that wants to use it.

This basically means that a large portion of the population who won’t/can’t buy new EVs. Is stuck using gas vehicles until you get lower cost used EVs. The problem there is that they are expensive to repair and NOT diy friendly. Add to that battery deg and lower reliability (in general see used teslas) and people are scared to buy used EVs.

Its a pricing problem that we have not gotten around yet. The subsidies helped but weren’t enough to get more people in. Couple that with a bad economic situation where people are holding onto their older stuff for longer and you basically get only progress on the higher income side while lower income brackets have to still use their gas vehicles which means the producers keep producing and supplying to a captive market.