It always depends, a lot of idols are actually in poverty though.
Most idols get debt from the years of training they had, to the profits they get from performing and everything goes back to the company until they can pay off their debt. And the debt is very expensive. The debt is based on the vocal and dance lessons, boarding, food (all the food idols have in their dorms are from the company) and language lessons
Yes, teens think they have to do something in order to be cool and not get bullied. Like drinking, teens being pressured by their friends to drink and if they don't their not cool, is an example.