Yes in the real world if you can't find a Cnc operator for the wages offered, you offer more. People see how much is offered and get the proper training. Right now wages are stagnant because there aren't lots of Cnc jobs going unfilled.
You keep chanting, "Wages are stagnant", like it's some talisman that excuses anything. We're talking about minimum wage, which is stagnant because those jobs aren't worth more, and because there's no shortage of people who can and will do them for what they pay right now. If someone is sitting around in one of those jobs much longer than they should, expecting it to someday become a well-paying career, that's HIS problem, not the employer's.
There are better jobs out there that don't have enough people to fill them, and they do pay better. Those people lagging in MW jobs could apply for them, if they bothered to become qualified for them. They don't, and that's not anyone's problem but theirs.