Rock - you make a good point BUT I'd suggest it's probably about the same as kids who go to Uni over here. Again, we have a structural issue where our clubs/Associations, State programs and national programs are so top-centric that unless you area superstar you pursue your sport at your own expense/desire.
If you have the resources to pay upfront for your Uni, pay for your opportunties to play and practice, and place no little value on the life experience, then staying at home and goin to an Australian school is a better option.
However, if you want to emerge from College with a degree, some life experience, and a basketball experience beyond what is available is here (and I said experience becasue the development is not necessarily better depending on your situation) and be largely debt-free, then the US is your only option (short of being Liz, Loz et al and earning megabucks in Europe and Asia.
With a little forethought, BA could capitalise on both pathways and benefit enormously. Imagine a National U24 Championships instead of U20's. The U20's are no longer a selction tool and incresingly kids are pulling out because of the cost and 'championship fatigue'. This tournament would be a great way to re-engage those returning from College and also the numerous 'late-bloomers' out there who never played State juniors. It would also provide an incentive and a pathway for clubs and associations to maintain contact with these players for their return and to maintain them as valued parts of the basketball community. These second-tier players are the backbone of our sport at a grassroots level - they coach our junior teams well, they play for ABL and SEABL and State league for long periods, they support NBL and WNBL programs and right now - we currently go without their skills for up to twenty years between when they leave for college or graduate juniors until they have their own kids who are entering the sport.
There are many pathways - unfortunately BA is only intersted in the one (and there is only one) which leads to the Boomers and Opals :(.