This makes me remember one of my friends. I also know a guy that is not my friend like that but he said the same thing. They said that they gamble ones with huge amount of money and they regretted that they lost and that has been the last time they gamble. The other guy was my friends neighbor while we were in school. I also have a guy which was my departmental mate, he used his school fee to gamble and he lost it, he was lucky that his father gave him another school fees. He said he will never gamble again. These examples are not gambling addiction, you are right.
When a person used an important money to do a probability, I see it as stupidity and lack of home training or financial training. I see know reason why anyone will use school fees to gamble because you know for sure that it's a 50:50 situation, sometimes it's even 30:70 situation depending on the risk but still people will put important money into it and then later start to regret their actions for doing that in the first place. If I am closed to you and you use school fees for gambling and I found out, I will not give you another one because I have done my responsibility as a guardian and parent, it's yours as a child to be sensible to use it for the right thing.
That's how one of my hostel mate used his industrial training money for gambling and he lost it. Been only the remaining students on campus, we just had to help him with food stuffs but he became the face of the semester for that time and since then, if you mention gambling to him or anything that has to do with sportbet, he will run away and never come back again.