This is a pet hate of mine, unrepairable products. By fair means of foul.
When you talk to people about this that are not involved in industry they tend to go one of a few ways but mostly it'll be that they believe there's some sort of a conspiracy by makers to make things unrepairable and, that's not usually true. Or, it's idiotic on the part of the maker, to which there is often more truth.
The problem that brands have is, more people believe the former over the latter. You can see how that presents a problem.
If you have a brand that you wish to protect, retain customers or grow then the last thing you need is your customers thinking that you're trying to screw them over and buy new products needlessly.
You don't really want them thinking you're a bunch of idiots either but, you could suppose that's better than the former. Though, not by much.
The worst of it is, many customers just accept it as the norm these days when it doesn't have to be and, ought not to be either. There are better ways for both manufacturers and end users who, in the end, have to co-exist as they do have a symbiotic relationship.
People will even accept and live with a kinda sub-standard product, just look (for those that can recall) the crap quality of 80's and 90's Hotpoint, Hoover etc machines that whilst riddled with problems worked reasonably well most of the time but, when they broke down parts were cheap, plentiful and almost anyone with the basic knowledge of a Fisher Price toolkit could repair. That meant though they broke (too much, some will argue), they were cheap and easy to fix.
People will live with that and, buy the same brand again because of it.
Brand loyalty is a fickle thing and, a strange one at times.
Many brands have to ask themselves these days how much it costs to "buy" new customers as opposed to retaining the ones that they have.
This is just the commercial argument for better design and repairability without even considering the environmental implications of better design and longevity. It's not moralistic, not preachy, just stone-cold commercial reality.