As a DIY-er, I might spend more than the value of my RAV4 EV, in order to increase it's range, but for "normal" people, buying a used Bolt/Mach-E/Kia/Hyundai/Volvo/Mini/etc. is going to be the sensible upgrade path, and most RAV4 EVs will be scrapped, as is the normal life-cycle of cars.
There...