While I sympathize with the logic, there is no reason to expect that.
For that matter, just ask your parents. It was national policy of the U.S. to build an overabundance of housing for the 50 years after the Great Depression, which is why landlords' income as a fraction of the national economy hit an all-time low in the mid 1980s. It has since rebounded to all-time highs, which is why nobody can find a place to live.
What? How? Real estate prices to income ratio in Austria is one of the worst in the EU. Few people can afford to buy without inheritance. Austrian real estate market is broken AF.
During this time, the world population has more than quadrupled.
Can you explain what you mean in more detail?
Growing by less than 40% in 100 years is slow. Austrians hardly had to scramble to provide housing for themselves.
(Now this line of reasoning is simplified quite a bit, because housing is area dependent. Even if the population in some country remains constant, say that everyone suddenly decides that a very tiny area of the country is the only worthwhile place to live. They all concentrate there and now there is a housing problem now. Well, not everywhere, just in that spot! In other spots there are empty, cheap houses.)
Can you point out exactly where they said that?
This is so silly.
Who's going to build these hypothetical housing units? So many that there are more houses than applicants.