is the failure of casinos has got to do with too much accessibility therefore not generating any more excitement? or is sports betting just the new trend which is where the new generations flock towards to? are you still team casino or team sports betting?
I really don't know much about the gambling culture in Australia, but if what you have said is true, then Australia has just found a way to reduce casino gambling. It's a proven truth that when people get easy access to things they tend to lose interest in it, but when it's not accessible to them, they tend to want it more. So I think this is just a strategy by the Australian government to reduce it.
On the other hand it might just be the fact that this generation tend to enjoy playing sports betting and are not really interested in casinos. Either ways Australian government has just found a way to reduce gambling.