I don't think that casino staff could help and offer any more insights than anyone else. People either have strong or weak characters. Those with stronger characters will realize that they have a problem and stop. Weak-minded people will keep going, trying to profit where they can't, and dig their own graves a little bit deeper every time.
Gambling is a leisure activity and should never be considered as a job or a safe way to make money. The hardest thing to do is to recognize you have a problem. Once you do that and stop lying to yourself, you can start looking for a way out. Many gamblers, unfortunately, never arrive at this stage and keep telling themselves I am fine, I don't have a problem.
They can be of help to be honest. If they share some secrets here that might be exploitable if that information landed on the right hands. I agree in regards to people, but I do not think that they are weak minded, this so called "weak minded" gamblers are the same as any other person, they know deep inside that they are addicted but they can't stop, like how cigarette smokers can't stop smoking even though they know that it is bad. It is easy to say that these people are weak minded because we are not in their shoes.