That's like saying the farmers are the real bosses while wal-mart is just a middle-man.
Ultimately, that's true. Without farmers (producers) Wal-Mart has nothing to sell.
There are few, if any, drug "Kingpins" in the US. There are lots & lots of middle-men. They usually end up dead or in jail. Their customers are the local distributors who usually are their own best customers.