You are making wide leaps in logic, it is as simple as if one is unhappy with a job or pay, they look for a new one that is more suitable. This requires research, networking, and patience. All three of these are aspects that a lot of people lack in certain industries. Education closing doors, that's a new one. What irks me is whiny people like these when folks like my parents and bazillions of others find ways to make it and never ask for public assistance or whine to anybody.
You're generalizing and oversimplifying everything into black & white arguments, but I'm the one making wide leaps in logic? Okie doke. But you're right, if one is unhappy with a job or pay, they can try to find a new one. Hopefully, they saved enough for tuition or can get someone to loan it to them, then hopefully they pick a good field that isn't saturated, find a company that gives them an opportunity, not run into any bad coworkers or management, avoid nepotism or become a sycophant, not get laid off, not have the economy or market for their field turn sour, etc.
Never heard of being "overqualified" for a job (i.e. employer thinks you'll skip town so they will pass you over)? Not to mention the regular shitting on people everyone seems to do if you didn't do a "mighty" STEM degree.
Well, as long as we know your sample size: your parents. Bazillions of people, huh? Good to know that you've spoken to the ~6 billion people on the planet and their imaginary friends -- and managed to gain their confidence so that they would all open up and "whine" to someone who's so judgmental.
But yes, "bazillions" do find a way to "make it". That's why they're still alive. How great their existence is, I guess that doesn't matter.