I don't accept that at all. Electric cars need servicing, new tyres, brakes, repairs, body work and spare parts. They need firmware updates, diagnostics, battery changes too. And of course there are second hand sales. There is plenty of business for an aftermarket to provide. It may well be that Tesla has to sell / licence the training, tools and software to do some of this but that doesn't stop dealers from offering the service.
Speaking in an absolute sense, you are right. Even electric cars need servicing.
Be practical, though. We aren't talking about just a few degrees of difference between electric cars and old-fashioned cars. The difference will prove to be huge.
Imagine an gasoline car but then remove the piston rings, gaskets, timing chain, water pump, starter motor and alternator (both of which mysteriously often fail), fuel pump, carburetor or fuel injectors. Petroleum burning vehicles have a level of complexity that is an order of magnitude greater than electrical cars. Of course they are going to fail more and require more frequent servicing.
In the long run, this debate will be moot. People buy whatever is cheapest up front. In the end, the fewer moving parts a device has, the cheaper it is. Count the moving parts.
The reason some Americans are concerned about this situation is because there is the very real possibility that in 20- or 30-years we could be stuck with automotive distribution regulations that are comically and expensively out of kilter with reality. Here in the colonies, business and government are often the same thing.