How is this good? It does not even cover scenarios such as folks buying properties before they can move in (e.g., parents waiting for their kids to finish their school year before they can move; buying for parents who are retiring in a few months), people living in properties for a few months of the year and leaving them vacant, people pooling their money and buying as a corporation or partnership (small-scale investors who will only own a few properties at any given time, or people who want some sort of de-facto rent-control on shared rooms in the property), or people buying vacation homes that they will occupy for a few months in the year? Is it socially just to stop all these classes of property buyer?