I don't think that it's that surprising that bitcoin gambling is exploding. Simply because of the non-reversibility that bitcoin offers as a payment option, unlike Paypal or Credit Cards. That's why both the house and the player prefers it because no one can charge back.
And this could be both good or bad for bitcoin. It could be good since it brings more attention to bitcoin, and more people use it; but it could be bad as well because people get addicting to gambling.
Because i see it good market place for businessman to get high revenue earnings because most of people gamble to much money for the sake of fun, thats why they take the oppurnity to build gambling den/sites so they can get easy big moneys in their pocket, casino owners get two things success their its passion for gambling and to be rich thats why gambling will not be outrend because they will think many ways of programs where people GEt more interest to gamble their money more and more