This is just gonna encourage more piracy.
For physical items I buy in the US when I can. And when I can't, I use a US shipping remailer. There's dozens of them around. I use shipito which gives me 2 physical addresses in the US, and 1 in Hong Kong and 1 in Europe. But google US remailer, you'll find dozens of these, do your research and pick one that looks good or has competitive pricing.
I also have a US phone number (just SIP service, but its easy to find US VoIP providers, hell you can even use Skype.)
And with US number and address you're pretty much as good as there. Some places might want a US credit card and address which is trickier, but you can (usually) get around that. Just say you're 'from Australia or in my case NZ but just visiting the US for 2 months' etc and that'll usually work.
But yeah. When it comes to software or anything digital, honestly, fuck them. Just pirate it.
Personally I think there SHOULD be government intervention and personally I think the government should outright state they won't care to protect copyright holders copyrights when they price gouge so substantially effectively making their software unaffordable.