There was a RICO indictment in San Diego in 2014 for pimps/sex trafficking in a streetgang, skanless, balck mob, outside of the top defendants, the majority of the 40 some odd people, had little to no money, outside of what they spent in clubs, on bottles and that shyt. it's a lifestyle that you get.
That said, there is a lot of money in the drug game, and a lot of people have made it. I personally know people who lost 650k, and were still on (but they eventually fell off) people who made 700k in less than a year, people who had 20k at like 21 or 22, my closest friend lost 2 million, and was making probably 100k a month, sometimes every week. We were in a spot with like 4 money counters, he'd be having after parties, with money counters on the table, just reckless dumb shyt. Another in that circle had to forfeit about 5 m's.
I was in high school with a couple thousand in my pockets, going to class, counting money at my boys spot after school, I would get high and just start pulling out my bankroll, and friends of mine who didn't know, would be like where did you get all that shyt? Like a pile of 10's and 5's.