this is indeed a life lesson, The things we do for money and no matter how much we have, we always want more, greed is part of human nature...
AS for franklin, I am not sure if to blame him, but yea he doesn't have patience or he is tired of the way he is being treated and his life entirely and he engaged himself in some deep shit, and it is very easy to start but to leave is almost impossible cos like you said, you just get sucked into it the more til your life is gone!
I think he got too greedy in the process and he didn’t know when to stop. He felt he was on top of the world and so he didn’t listen to anyone, not even his mom.
There are so many lessons to learn from this story.