What tax bill? Though you use the term "bill," you seem to be arguing that they should actually donate money to the Australia government. I've haven't seen any

What tax bill? Though you use the term "bill," you seem to be arguing that they should actually donate money to the Australia government. I've haven't seen any news that would indicate Apple isn't paying the legally required taxes in Australia. If they do choose to donate money, I can think of a few better things for them to focus their philanthropic efforts on than government.