There's no point talking about second-hand EVs because they basically don't drop in price. This is because they don't really wear out they only have about 12 moving parts or something so nothing really can go wrong (unless it's a Tesla obviously).
The trouble with that is they never go down in price, they're always expensive. It comes to something when a second-hand EV costs more than a brand new ICE. It's especially annoying because I will be in the market for a new car in maybe a year, I love for it to be an EV but I don't have that kind of money. Just to be clear here, I'm not exactly living paycheck to paycheck and I'm fairly well off, and even I can't afford an EV.
Unless various governments around the world start subsidising them I don't see how we're going to progress.
What's going to happen is that gasoline will become increasingly expensive as oil becomes increasingly scarce, and eventually only the wealthy will be able to afford private vehicles. Assuming we get that far.