I'm an expat now but I'm hearing it's even worse back in Australia. [Disclaimer: Some of this may be off because I'm hearing it second-hand, not actively investigating myself, so corrections are welcome]
I hear people who are already in the top 1-2% in income are told their borrowing power is only A$1M (~U$660K) while houses at all worth raising a family in cost A$3-6M. Banks don't seem to want to lend to them because they could instead lend to yet another property investor that already has a portfolio full of equity and collateral. The houses will sell and the mortgages will close, the banks can afford to be picky.
If you work in tech non-remotely, you're looking at the high end of that because you're competing with everyone else working tech, heavily weighted towards Sydney, and the rest of the country's housing supply is largely irrelevant. The cities certainly aren't designed for car commuting, so the supply of locations is further narrowed to places that are either so close they're walkable or have good public transport.
To my US readers I cannot emphasize enough how much this limits people's options both ways. When you have a non-remote job it limits your housing options, and if you're lucky enough to lock in a house, now it's limited your employment options in return. This isn't great for housing or employment markets. I'd like to think remote work has helped some people, but the most career-focused people I know are sticking to in-person connections, competing with everyone else doing the same.
Meanwhile cashed-up investors can buy up several houses and neither live in them nor rent them out. They're taking supply away from both the buying and renting markets, which is their legal right and a smart move on their part, but totally dysfunctional for the market as a whole. Anyone who does buy a house to rent it out is doing their small part to make buying less affordable but make renting more affordable, making it just that little bit less likely that the next person out there is a buyer of any kind.
Of course there's been doomsaying about a housing bubble pop for decades, especially during the world-famous pandemic lockdowns. Nothing popped and the exponential runaway pricing continues. Surely it's getting untenable enough to pop somehow, if my successful friends can't buy houses then I don't know who's left in the market except the real estate investors themselves.
I honestly don't see how I can un-expat now, and I'm just counting myself lucky to own property in the USA. If I want to keep this sweet deal, my options for moving are more limited than they've ever been, but it looks like a lot of people would gladly sacrifice flexibility to have anywhere near a tenable deal on housing.