> Nobody wants to buy a second hand EV if it needs a usd10-15k for a new battery and an EV becomes pretty much unsellable at this point without a replaced battery.

Enough people believe this that such cars are the best deal right now, by far. You're more likely to have to replace a Toyota Engine by 200,000 miles (4%) than a Tesla Battery (3%). As long as the battery has liquid cooling (aka not the Leaf) and is relatively large (small batteries do more cycles per mile) and you do a battery health check at time of purchase to look for abuse, the battery will likely outlast the rest of the car, unless you're doing Taxi type milage. In which case you need to ensure you're getting an LFP battery, which should last close to a million miles.