"Top Boy" qualifies as well in that respect (a new, and quite likely final, season has just been released). While not exactly as well-known as "Breaking Bad", it not only offers an insightful perspective on the drug trade itself but also on a specific London subculture.
Fundamentally, that show is about business and entrepreneurship. Sure, the industry might seem more than just a little shady and its methods often are ruthless, but basic business principles still apply (to quote one of the main characters: "Buy cheap, sell dear.").
