Why shouldn’t you tell the old man about things that make money? I’ve done this many times.

The results are nothing more than these three:
1. The old man approves this money-making model, then thinks about freeloading off you—either that, or he wants to amplify it, meaning he copies it to end up killing you.
2. The old man doesn’t approve this money-making model. With a worried look, he tells you that making quick money will ruin you.
3. The old man couldn’t care less—he just waits for you to eat dirt.