Seriously, most Australians and Brits probably have no idea how pointless it is to bring up stuff like this:
The U.S. has some problems that Australia doesn't have. It's got a lot more racial crimes, it's got a lot more gun-related crimes, but I don't think that is going to drive a whole bunch of ultra-rich Americans out of their country,
What most foreigners consistently get wrong when looking at our crime stats is failing to note that the overwhelming majority of our gun deaths either have a criminal or a suicidal person on the receiving end of the bullet. Since it's illegal in all 50 states and DC to shoot someone over a non-violent offense or even a violent misdemeanor, that almost invariably means that when a criminal is shot it's either by someone who by definition doesn't respect the law (fellow criminal) or someone about to be on the receiving end of a violent felony.
I can't blame them for this misunderstanding. Our gun control lobby is notorious for manipulating stats by doing stuff like putting gangbangers near the age of majority, who are both eligible to be prosecuted as adults and involved in serious crime when killed, as "children" under the death stats. That's about as bad as most countries refusing to count the death of premature babies on their mortality rates and mocking us for our higher mortality rate because we record those as infant deaths.
But hey, if you want to outsource your basic daily safety to the state, more power to you. You have a rich tradition of subjection to royal and aristocratic authority. Who are we to judge your culture, even if it makes no sense to most of us how you can call yourselves "free citizens" when your electorate is basically at the mercy of your elites' willingness to use force?