Earlier quoted context omitted.
The article's gist is that Vancouver lacks the "otherwise desirable economic climate" that makes the SFBA, Manhattan and London housing markets at least tolerable. Rather than being a side-effect of explosive economic growth as in SF, the housing prices are totally out-of-step with the local economy.
It's really painful. Having average home price of $1.8m while the median salary is at $60k. Something really needs to be done to help out Vancouverites.
As a city, Vancouver has the ability to vote for significant property tax increases. Which would encourage investors and speculators to rent out more of their (currently empty) property in order to offset the yearly cost of ownership. Right now, it probably is more expensive to sell property that currently has renters living in it, because evicting people is a messy, expensive and difficult process. But higher property taxes make it more expensive to own: a tax of 3% per year completely eats up a 3% yearly increase in property value. Unless you offset the tax through other income.