Earlier quoted context omitted.
There is a difference between someone being worth $50/hour and another person willing to do whatever for just $5/hour. For example, rich kids can take unpaid internships because they don't have to worry about food or rent for the duration of internships. Poor kids can't usually afford to take jobs that don't pay.
I'm guessing poor kids usually don't have jobs at all. Only about 40% of poor people 18-64 even have jobs.
1. teenage children of the upper middle class or higher
2. poor adults with a history of bad decisions
It's kind of a weird mix. Where are the children of the poor? You'd think they might want money much more than the children of better-off families do.
Surgeons, business owners, passenger jet pilots, software developers, and corporate executives all send their teenagers off to work minimum wage jobs. The point seems to be to learn about answering to a boss and/or to learn why success in school is important.