I agree that it would be rare for Aussies to make Anderson-like money in Europe, but plenty of Aussies have played there (even if only during NBL off seasons).
Off the top of my head I can name numerous Aussies currently in the NBL who have played overseas: Rogers, Maher, Mottram, Anstey, Catt, Pero C, Jones, Heal, Penney, Rillie, Smith, Stiff and CJ. There are probably others, not to mention past players such as Bradtke, Gaze etc.
Not all those players are 'elite' and I can't think of any of them having EU passports (I could be wrong).
Europe may not have its eye trained on Aus for imports but if you think that all of the elite players here couldn't get a gig over there if they were truly interested I would be shocked.
The question comes down to whether for the lifestyle or 'extra' pay it is worth it for Aussie players to ply their trade as imports (with the uncertainty that comes with it) in Europe or sit comfortably in a team in AUS being paid a great salary.
Change it so that a Catt or Saville or CJ can only be paid max $175,000, or much less if the team was 'stacked'. If they could be paid double that in Europe, of course they would go. But why would they if the NBL is paying them what they are worth on the international market (which is way more than the paltry NBL salary cap). According to the NBL basketball players were 'worth' 30% more 7 years than they are now. That is not a sustainable model.