From Paul Barrett:
The reason why we can’t learn much in a practical sense from other countries is that we’re not other countries, and we’re not going to become other countries. We’re not going to have Australia’s society with Australia’s values and Australia’s attitudes toward firearms.
If your desire is to have a society that is more like that, it would be much easier for you to move to that society than to transpose that society onto this 300 million-person, 3,000 mile wide, incredibly complex, culture-of-many-cultures country.
Well d'oh or may be not!