Do they make a lot of money in drug sales?
Drug sales tend to be controlled by adults, and there is a world of difference between the world of kids and that of the adults in a gang. A few adults tend to make the big money, with a small group of young adults making a percentage distributing for them. You’re average 15 year old gang member might make a few dollars from petty theft or very small drug sales, but is usually as broke as any teenager without a job.