I'm afraid we are going to have to face the fact that not everything is economically repairable. The bottom line is that in many cases, it costs much less (in labor and materials) to make a new camera (or whatever) than to repair an old one. This is not a malicious practice of evil business, it's just a fact of life.
Back in 1950, when radio repair was in its heyday, the people who assembled radios at the factory used the same techniques as the repairman (soldering irons, pliers, screwdrivers, etc.). Repair was easy because manufacturing was not automated -- it used the same hand-tool techniques.
In 1975, in the printed-circuit-board era, assembly was automated but hand repair was still relatively easy. Most of the individual components hadn't changed much since the hand-tool era.
Today we're dealing with custom ICs (which you can't repair inside of) and extremely dense surface-mount circuit boards with tiny, unidentifiable components. Repair is difficult.
Admittedly, we all feel sad when we encounter things that could have been repairable and aren't, but...
Should a customer choose a $400 camera that is repairable over a $100 camera (with equal performance) that is not? I don't think so.
And I certainly don't want the repair industry ganging up on the manufacturers and forcing them to do away with the $100 non-repairable camera, forcing everybody to pay the higher price.
In my opinion, the repair industry got spoiled in the 1950s, when everybody had primitive TV sets that ate vacuum tubes at the rate of one every three or four weeks. Nowadays, a TV lasts maybe 8 years without repair, and when it fails, the cause of the failure is usually hard to find. This tells me that all the components are much more reliable, and they are also much better matched (to last the same length of time). This is supposed to be worse? Sorry -- when I indulge in nostalgia, I don't go *that* far.