If your friend decides to start scamming people what else? Use that money to start a family or start buying properties? Like what my country people are doing? They so believe that stealing money and using the money right means you escaped karma or judgement.
When a fraudster researches karma sufficiently, they will never have the audacity to seize someone else wealth. But in the present time, there are very few individuals with this kind of mentality. Since we all think worldly thoughts and consider how to live luxuriously. Accordingly, when a person suffers financial loss, they become quite despondent and there is a risk of engaging in wrongdoing out of that regret. @OP, friend has faced exactly this kind of situation.
In my opinion, regardless of the circumstances, one should work hard with honesty and integrity. Because money and wealth can be regained. It is certain that one cannot truly be happy by deceiving others wealth.