Earlier quoted context omitted.
Sounds 100% like America. :-/
I'm not American, so I have less insight than you perhaps, but I'd say America is much more affordable than Australia. In Australia most jobs are in Sydney and Melbourne. Perth is mostly for mining and Brisbane doesn't have many tech jobs. Real estate prices in Sydney and Melbourne are in the million(s), but incomes are ~100+k AUD. Some people earn 200k+ as a principal engineer, but that's pretty much it. In America…
Look at property prices in Vancouver and Toronto, New York and San Francisco or London. You're going to find them just as unaffordable relative to the median salary. The difference is that for you personally - a worker in tech, the US will likely pay you a better salary relative to the median than you receive in Australia.