I suppose the bigger red flag is if they say it's fun or for money but then it begins to affect your finances. When a person reduces the amount of money to make up for a loss, or starts using the money for bills or business, the game gets losing money. The same habit can be established over time even by those who are playing casually. It is far better to have a fixed entertainment budget, and consider the loss as spent money, than to hope to win the big one on the next trip and then spend the rest of one's life worrying about their finances.
Having different budget is very important as player to avoid getting trapped with the urge of trying to recover loses.
Profits urgency has been one of the reason why so many people are becoming problematic and getting into issues because they want to make money from gambling. Business money need to be isolated and not to be used for gambling by any means due to the riskn involved.
