I really don't believe some
I really don't believe some of these claims. For one thing, the whole angle about losing half their profit on service? Yeah, whatever .... Every vehicle on the road today gets engineered with planned obsolescence in mind. They give a factory warranty of X number of miles and designers are instructed to build the parts JUST well enough to generally last through that much use. They get told to go back and redo things that are "over engineered".
If the big auto makers went to EVs, they'd just continue the same processes and procedures. You'd need to occasionally get one serviced, just like before, because they would keep initial profit margins up and costs down by electing to engineer them so they NEEDED that service.
Basic things like oil changes aren't generally big profit centers for dealerships. Some TRY to make them so by upping the prices, but people tend to just go elsewhere for cheaper oil changes when they do that. Usually, they're more of a break-even proposition that's used as an excuse to find other things on a vehicle that need repair.
With an electric car, you'll still need wheel alignments done and you'll still need new tires. Suspension components will still wear out the same as ever. And you'll still need body work done after accidents -- which is where they REALLY make some profits, especially with insurance paying for most of it. Things like the HVAC system will still break down, and you tend to have multiple cooling pumps and systems if you're going to climate control the battery itself as well as the cabin.
No -- the real reason the auto-makers haven't gone all out to switch to electric is because it has a huge up-front cost for them and no clear financial benefit. Look at all the people they employ who are experts in designing internal combustion engines. Those folks wouldn't necessarily know a thing about electric motors and batteries and the computer systems that do the battery management, etc. They'd have to hire a lot of people with different expertise. Then they'd have to re-tool the assembly lines and make new partnerships, or build new factories to build what's needed for an EV. They'd lose a lot of customers who simply don't WANT an electric vehicle right now, too. (A lot of people are still afraid to own an EV. Everything from range anxiety to lack of personal knowledge of how to service one, to practical problems like inability to install adequate charging for one, where they have to park it each night.