New Zealand has a similar housing problem. House prices are skyrocketing and pricing out young people. A 25-30% rise in the past year has meant few people are saving fast enough to get a deposit. But two or three years ago the govt. banned overseas buyers. There is no reason to suggest the ban is not effective. It even bans non-permanent residents, so plenty of legitimate residents (work visas) can't purchase propert…
I believe foreign buyers is also a scapegoat in Canada. At first I believed it when home prices were only growing at obscene rates in the major cities but now it has spread to every tiny community in the country, literally from Newfoundland to the Yukon. This is a direct consequence of interest rates being too low for too long and capital having run out of good places to go (zero interest rates, equities at peaks, etc).