There's a lot of variables.
Sometimes it's more of the people themselves than the opportunity in front of them. Living that life will change you, and multiply all your bad habits, a lot of the time. Like if you party a lot, wait til you have the money to do that every night if you want. And see how you look after a year of that lifestyle, staying ip all night, waking up and making moves when YOU feel like it. If you spend on women, wait until you can spend x10 or x20. Breaking out the whole bag for the after party. If you irresponsible with money, wait til you are trying to manage tens of thousands per month, with no guidance.
Lots of my boys, many people I know, ran up a lot of money, only to be cut down, and have to day by day it for awhile. Lots of people had a good run, but their lifestyle outran their income. When the weed game shifted, around 2009, one of my close friends went from WAY up (for a 22 year old) to having a lifestyle that his income couldn't cover anymore. Happened in a matter of months. Had the expensive condo, the expensive girlfriend, expensive habits, bottle service, traveling, smoking blunts everyday. Couldn't keep it up.
Few bad investments, and then you start getting work fronted, which can mean you take what you get. And this dude used to have like 10k in his pockets and forget about it, like racks just stuffed in a pair of jeans in the dirty clothes.
Another of my day 1 friends ran it WAY up, and a task force had to come take him down. Calls me everyday talking shyt and laughing, talking about I want my 2 million back! Where's my duffle bag!
I knew guys who had 10 bricks, and 10 months later, were buying two ounces. I myself back in those days took hard hits, and got up again, and went right back to it. I pretty much got cleaned out in late 2012, but by 2015 I was in South Of France wondering how the fukk I made it. I got hit in 2010, and 6 months later went and got it back. But, don't let anyone tell you it doesn't take pieces out of you.
Watched a lot of people fall off, that shyt haunts me. Like the ones I looked up to. I remember coming home in 2008 and my homie had like 30 pairs of jeans, Rock and Republic or something like that, and I was just trying to be like him.