The real problem here, of course, isn't that Australia wants to ban these games, but that they're falling through the cracks of what seems to be an extremely lax rating system. There's really no rating assigned to these games, so according to the rules, they can't be sold. But the rules make no sense in this case: no one, as far as we've heard, actually wants to ban these games in the country, and no one cares whether they're being sold on store shelves or not.
Still, Massively does expect action, eventually, even if it's an apparently much-needed rejiggering of the ratings system to include these "unrated" games. Bottom line right now is that if you want to buy or sell World of Warcraft in Australia, no one's stopping you from doing so.