There was an interesting article in The Age over the weekend, all about classic Australian literature and why none of it’s currently in print. The main reason seems to be that publishers can’t afford it. The market is focused on new works, and publishing houses can’t risk re-printing books from the 1960s or 40s or whenever, simply because they can’t be sure anyone will buy them.
It seems Print On Demand and e-book technologies might change all of that. As more and more books get uploaded to Project Gutenberg or various online databases, and become available on POD and e-book sevices, it stands to reason that the back-catalogue of Australian literature will be included, and wind up available to new readers.