Earlier quoted context omitted.
Every amount of new housing will be purchased by competitive investors. You are heavily underestimating the amount of money unsophisticated investors have, and the psychological effect of owning more and more of territory. Most people will never say no to owning more money and territory.
Tax homes that aren’t your primary residence to the point where it’s not a good investment.
In other countries with lax address registration laws like Poland, real estate can be the only investment vehicle without capital gains tax. Yes, if you sell real estate in Poland after 5 years you pay zero capital gains tax and anyone can buy (please invest and make that mofo pop). Opposite to every other investment vehicle from bonds to shares to even currencies where the capital gains tax exists.
It's just pure rectified human greed.