And how greedy do you have to be to have 24 million and still be at it? I'd be living large on an island somewhere.
Breaking Bad illustrates this quite well. Jessie pleads with Walter to stop - they have millions - but even as the show goes on & Walter winds up with something like $80 million, he doesn't want to stop. It quits being about the money & migrates into becoming a ladder. I think that happens IRL because #1, once you get to the point where money doesn't matter anymore, you still need something to do, and #2, you've made it a habit of doing all that work for so long & being in the scene (whether it's legitimate business dealings or underground narcotics), that's just kind of what you do.
You see it all the time with business owners who make tens of millions of dollars from their businesses but keep on working well past retirement age because that's just what they do. From the outside, it looks like greed, but on the inside, I think people like that just have an internal drive where they need to keep going, you know? Plus they like the scene...if you're a drug dealer, then what's better than playing Scarface with pretty girls, fancy cars, a posse, and the feeling of power from having a crew, huge sums of money, and getting away with it without the authorities knowing?
And you know, the smart criminals DO take that route - they pull off a single big heist & then get out of the scene permanently. For example, a third of all homicides in America go unresolved, which means that there are thousands of murderers living among us who aren't dumb enough to do it twice (then again, even most serial killers don't get caught, so I guess that's not a good argument). And you know these things are like cockroaches...one guy gets nabbed with $24 million, you know there's at least a dozen others out there doing the exact same thing NOT getting caught & flying under the radar in a more stealthy manner. Becomes a creepy path to think down