Remember that an absolutely free and completely market-driven economy is a really bad one where massive inequality exists? We are already there in terms of housing, and it is no a place where we want to be. Moreover, housing is not a commodity like many other items in the market. It is one of the few unique items where homes and the foundation of families are built. Without this foundation, the vast majority of people do not and cannot feel secure enough to take root in the society.
What I'm saying is, if you (and esp the government) wants society to build and grow, you have to create, or at least foster, an environment where people can feel secure and stable. Without that stability, people will just feel like migrants or temporary settlers, and you don't build societies that way.
This security do not have to come from private home ownership -- it simply means people needs to be able to afford a home, and use it as a home base where they know they won't have to worry about whether there'll be a roof above their head. If the government so chooses, we can follow the Singaporean model where the bulk of the citizens resides in government-sponsored public housing. Our government is obviously not willing and unable to do that, so the next best thing is for them to at least ensure everyone has a chance to score a reasonably affordable home.
Australia and New Zealand are already / have already taken measures to limit foreign home ownership to protect their own citizens. Last I check, they are still 2 relatively free countries -- although Australia is fast turning into an unofficial Mainland China overseas province.
Just because you are from Hong Kong and that is where your experience base is coming from doesn't make it a good one to reference. It's like someone with a verbally abusive spouse telling another person how his partner is not that bad because the other partner never gets physically abusive. Among developed cities around the world, Hong Kong has one of the highest Gini coefficient and worst housing affordability.
Have you got no concept of why Vancouver is a more favourable place to live than Fort St. John, or even just Kelowna? I don't even know why you are making bullshxt suggestions like that.
