We have just come through Covid, and a bout of inflation, I am not surprised the demand for any vehicles has fallen.
On top of that, the cost of an EV is high, (mostly battery) it's too soon to know what an EV's life will be, and it's true used value.
A very large part of the price is the battery, and a replacement battery ought to be the first major cost.*
The motor and electronics should out live the bodyshell.
The most common battery failure will be one cell getting out of step with all the others, so far I have not read of a charging cycle to correct this.
I notice on an American Nissan website there are people claiming to have replaced a faulty cell/s but it very risky, we need to be sure the battery has no charge at all before starting. (the battery is made up of lots of small batteries connect in series for the voltage and parallel for the current.)
There are other battery technology ready but it appears no one is willing to invest to get them into production.
These could give faster charging, lower cost, and much less environmental problems.
Just like in the early days of petrol cars, and petrol pumps, there are not enough charging stations but this is a chicken and egg situation.
Not enough cars because there are not enough charging points, and not enough charging points and so on.
The companies that have invested in charging, bought the cheapest equipment, or perhaps they did not understand what they were doing, so now many charging points are not working when you find them, and when one is found the cost of a recharge is far too high but they are in short supply so they can demand whatever they want.
We should have been at this stage at least 30 years ago but no one wanted to think about it back then.
*I bought a used Nissan Leaf 40,000 miles three years old, lots of people were telling me I would have to buy a new battery (£7,000 I am not sure if that was correct) but there was still four years left on the battery warranty so I bought it.
The battery tested as good as new, whatever that meant.
I spoke to the previous owner, (I bought the car from a EV specialist) he had not had any trouble in three years and had replaced it with another.
He had sold it on the advise of his employers accountant, I assume because cars on company books are usually written off after three years.
I ran it for a year before I stopped driving due to age.
My insurers wanted to charge more for the EV but when I said I would go elsewhere they halved the EV surcharge.
I lost about £100 when I sold it, and apart from electricity, and insurance it cost me nothing more.