Welcome to the club. :) What is happening to you is the same that happened to old blacksmiths when the horseless carriage came along. Nobody needed someone who knew all about horses.
Now days, nobody needs someone who is able to diagnose and repair obscure problems on an automobile that has a computer to tell you what component is failing - on a car that is designed to be thrown away rather than spend tons of money on an overhaul.
It's not greed and corruption, it is called progress. The same thing will soon happen to computer programmers when machines are able to construct their own programming.
It doesn't detract from your personal skill, it is a simple case of those skills being in less and less demand.
My advice is to start re-training in some other profession now. The age of the highly skilled auto mechanic is all but gone with the wind.
Or... do an Indeed.com search for "Electromechanical Assembler" - they are dying to hire you.