As an appliance OWNER, not a tech, I see the same issue as the auto industry....self-taught shade tree mechanics are rapidly becoming a thing of the past. Cars are too techy, and a good portion of the appliance industry, as well. I would not consider taking my car to a garage that as a minimum does not have ALL their mechanics ASE certified. I am actually taking both Mazdas strictly to the dealer for routine maintenance.
In appliance world, there is still that low end segment of units with mechanical controls, non-digital timers, etc etc. But even THEY have SOME electronics. And I suspect the majority of that market is sold to appartments, who try to have their jack-of-all-trade do the maintenance.
SO the service world will evolve, but there will be a demand for trained techs. The new appliances , based on observations here at the forum, have NOT proved to be any more reliable than older ones, just more complicated and expensive to repair. SO, a homeowner will be faced with a dilemma.....send a lot to repair an unit he paid $1000 ++ for, or simply dump the high end unit and buy a $299 HD special replacement