The kid keeps asking the millionaire raider and trader. The trader seems to be thinking hard, but the answer is, he just doesn't know. He's not even sure how to think about the question. Like all gamblers, he is perhaps not even really interested in money, but in the action.
Money is just the way to keep score.
The millionaire is a predator, a corporate raider, a Wall Street shark. His name is Gordon Gekko, the name no doubt inspired by the lizard that feeds on insects and sheds its tail when trapped. He likes to win. The kid is a broker for a second-tier Wall Street firm. He works the phones, soliciting new clients, offering second-hand advice, buying and selling and dreaming.