For online casinos it that easier for students to have access to the site but yet I don't know if that is possible for gambling site to lure students to keep gambling in their site if not physically operated, now, offering bonuses is like a choice of whether they want or not, they casino operating can not in anyway force people or lured people in gambling without them having to control themselves. For instance, like I am now, no casino would preach all kinds of bonuses to me to get attracted to keep gambling on their sites without me following my standards of gambling.
You are saying it because it's norms for people that gamble online but have you been to gambling arena in school premises before. There is one place in my place they call gambling arena, I don't know the number of students that gamble online but I can say that even people that don't gamble comes there and before they live the place, they bet atleast one time and lose because they don't know anything about it and mostly it's because of friends influence.
I don't think gambling is really the problem in our society, the challenge is that students now chase money instead of their studies and I can tell yiu for free that when a student gamble, their motivation is money and not not fun. Student have plenty of ways to b have fun in school, doing gambling will just be a way of making money when they are supposed to be facing their books and reading for test and exams, that's why you see many of them complain about failures.