It's called "training"! Most of us can buy something in the way of an appliance (OK, like a toaster), take it home and make toast. Unfortunately, computers are STILL not like that. How many users have no idea what a "paging file" is? Or what a driver is? (And a lot of the issues seem to be related to not having the latest drivers). Microsoft, with Win 10, tries to deal with drivers but I've seen the wrong ones go out. And few users keep tabs on how much disk space they have left. Also, major feature updates may change user settings and do users know that they should check their settings after this kind of update?
So, you are correct. Part of the problem is that most people are not computer geeks these days but, unfortunately, computers still need updates and maintenance and, at least, a knowledgeable user. It's like a couple of kids dropping off a computer at grandma's house and showing her what to click on for family photos, what to click on for Facebook, and what to click on for her email without explaining what to do when she gets mail from the Nigerian prince or how not to shut off the computer. I had one woman at work who we had to train on how to use a mouse. It is an issue, just like you say, but given the nature of computers and components, they will never get computers to the point where they can be maintained (as opposed to just 'used') by someone with little or no training. All IMHO.