That kind of wisdom though can be learn in years of playing, it's not that we can get it with a right mindset from the beginning. From the start is going to be a different feeling, specially if you got to experience winning and making a lot of money and maybe thinking that you can treat it seriously as money making job.
But later on, when you go on a losing streak maybe you will have second thoughts about it. So you continue and you don't know it's been years already and you are falling into addiction until one day you snap out of it and see that what you are doing is wrong and that gambling can ruined your life. So you start to just play for fun and entertainment with friends or maybe playing alone in online games.
Yes, that feeling is there because I feel that in my beginning on gambling. But after getting many losses, I realize that I was wrong and it made me lose much. And if they are still thinking that treating gambling as money making job, they will see that they are also wrong. They need to change that before it is too late and make them lose much too.
But some people will not think much about their losses and not realize that they were wrong before. They become deep in gambling and are also addicted to gambling. If they can realize what happened to them and start to change, that is good but if not, they will just fall deeper into gambling without seeing a way out.