Was it ever explained in the film or in a prequel comic? I don't recall seeing anything explaining where Simmons sudden wealth came from. In ROTF, we saw him working with his mother in the family deli. But now in DOTM, he is living the life of luxury in a mansion with his personal bodyguard Dutch, as well as a maid and other workers. He has self portraits of himself painted featuring him in Egypt. Was his wealth simply a result of the book he wrote? To be honest, I feel like the book had nothing to do with his wealth at all, because it seemed Simmons's lifestyle was far to extravagant to be caused by 1 book being on the best-seller list.