It would be quite interesting and I am sure there must be already a number of scientific studies around gambling. I am sure the casinos have requested and financed this type of works, just like McDonalds has perfect knowledge of the views of its clients and has carefully designed all the products. I think the field is certainly still open with the gambling on-line to economic, psicological or other studies.
Casinos want more people to gamble and spend more time in gambling for obvious reasons. A lot of research has already done on gambling and there is a concent world wide that its an addiction and should only be done by moderators and that too in moderation. Just dont spend too much on gambling, most take it fun but end up in anxiety.
Studies shows the same result all over again and yet many are still addicted in gambling. Most probably, this studies either can give a warning to some gamblers and can encourage someone to gamble, hoping that the purpose of this study is to fully educate the people and give the real situation of gambling because if its not, then I think this is a useless studies which only side in favor of the casinos.