Don't conflate apprenticeships with taking advantage of poor people. Are you pretending there is no difference between these two scenarios?
A) Someone is a gifted tattoo artist and you want to learn the craft from them, so you pay them to teach you. You're responsible for your living expenses and you get by with odd jobs or what-have-you.
B) Someone pays you $5/day to do office work for them.
C) Someone is a gifted tattoo artist and you want to learn the craft from them, but you don't have any money to pay them. So the tattoo artist takes you on as a full-time paid intern, making a non-living wage
A) Someone is a gifted tattoo artist and you want to learn the craft from them, so you pay them to teach you. You're responsible for your living expenses and you get by with odd jobs or what-have-you.
B) Someone pays you $5/day to do office work for them.