Wodka,
You seem not to understand how this visa category came into existence. It was negotiated by the Australian government as part of a free trade agreement 2005. It took many years of hard negotiating to reach that agreement and one of the great things about it is the E3 visa.
Why do countries think just cause a visa allocation is going unused that they deserve to get it without having to do any of the work that was involved in getting that allocation in the first place?