The problem is that replacing the battery in an EV costs as much as a new car which is something you need to do if it’s 10 years old.
Even if 1/3 of new cars sold is an EV that will take decades for any meaningful adoption since new cars are incredibly uncommon and affordable replacemt batteries don’t yet exist.
I don’t mind car makers making EVs but it seems like a pretty reasonable choice from Toyota not to enter that market yet.