Do they? The normal line is that servicing costs are less for EVs, as well as cheaper fuel costs.
Really? I believe it's a concern (people worry over silly things all the time) but the only brand I've heard of that has significant battery issues was the Nissan leaf because it has naff cooling. Even there the batteries are expected to last 10 years before being refurbed for other uses.
General running costs are low, but as soon as things start to go wrong it will get very expensive.
Electric cars are currently very expensive to purchase.
at the moment there are very few garages that can repair electric vehicles, and so people will be forced to go to the main dealer, whom charge extortionate ammount of labour, along the lines of £80 per hour in some places.
Most electric cars are still quite new, we've had hybrids for years but not in any great capacity, and when the electrics or battery's pack up people just used them like an ordinary car. But hybrids are also being banned.
We don't yet know the true cost of owning electric vehicles in terms of repairs with most fully electric cars being of higher class brands (Tesla, jaguar etc) and aim at different price points, and so use better quality materials.
We are yet to see long term effects of fully electric cars on the budget side of things.
Batteries and electric motors will be horrendously expensive, and electrical faults will be difficult to source, along with the increase costs to purchase the vehicles, I cannot see it being viable to physically owning a used electric vehicle.
I believe the way it will go in the future is that cars will be only available on lease.