There is a big reason for this. Uneducated people get played for easily and there is that huge disadvantage in non-knowledge driven based jobs. Take for example the job of a cab/bus driver. Or some body like mason, the problem the money you earn is directly related to number or hours/quantity of work you get delivered. And since quantity is largely related to a physical activity in this case. It means you will do a lot of physical labor to earn more money. This is not scalable and becomes blatantly clear to a lot of people involved in this. Add to this that these kinds of jobs don't get much social respect.
My dad was a bus driver. And I know what it was for me as a kid. It was always to study my ass off or be doomed. And yes all other standard social problems apply. You are always considered poor and assumed to remain such till eternity. No one likes knowing that he being a educated white collar knowledge worker, his kids and the kids of a bus driver ultimately get the same destiny. I even had problems getting married. Coming from a low financial background creates big problems. People find it hard to accept if you win, and pass sympathies if you don't.
So the only way remains: Study and fight your way out of the situation.
My teenage through early 20's was the most stressful phase of my life. Because failure was not an option. No money to do business, So if I fail it will going back to same life.
I'm not saying life is rosy as a programmer. It has its own problems both financial and in other aspects of life. But yet its far better than what I saw in early parts of my life(Nothing I will tell you, can explain you what it feels to be in that place- I only hope no other kid goes through that). I don't feel sad that I can't buy an iPhone. But rather its satisfying to know I don't have break my back just to eat, wear clothes and live under a roof.
Its still same here in India for a large number of people. Education and a white collar job doesn't fix all problems. But it does fix enough problems in your life to make it livable.