Yeah, I once worked for an outfit selling all kinds of tools and fasteners to car dealers. They made most of their profit on "service", and not on new auto sales per se. We regularly dealt with over 50 dealers, and considered only one of those as honest. That was a long time ago; but nothing has changed in that respect. If anything, it's gotten worse due to all the dependency on electronics. They've really go you over a barrel on that one. And that's what their mechanics are taught to do - each specializes in just this or that,
in relation to just their own models of cars; and a lot of it pertains to diagnostic switching out parts.
We don't take our own cars to dealerships for service, but to a trusted friend with an actual engineering background. He had a high income and liked fine cars, but couldn't find anyone he could trust to competently fix his own vehicles - so he learned the ropes himself, and pretty soon his co-workers were taking their BMW's and Benzes, and Toyotas to him, and he discovered he was making more money at that than his daytime engineering job, even though charging way less than dealerships, so he made it a full time pursuit.
Most digital cameras seem to be in a different category in that respect - people view them as expendable,
just like their cell phones which get regularly replaced when something newer comes out. Maintenance,
other than cleaning and battery replacement, seems to be a distant issue to them.
I'm entirely capable of making potential view camera repairs myself (other than lenses and shutters);
and have even done most of my own Medium Format RF and SLR fixes, since I've religiously avoided any automated bells n' whistles in that category too, and even in my choice of 35mm cameras.
In other words, I'm completely married to film and darkroom paper, until "death do us part", one way or the other.