It is symbolism when everyone who is paid to think in this space considers it not to be a solution to the root of the problem, which is a lack of housing supply to keep up with job growth. You've banned foreign investors, great, there are still domestic investors who will fill the void in the market like gas in a small room. If you want there to not be investors, then housing shouldn't be such a great speculative asset to invest in, and it only is such an asset because local governments have opted to constrain supply and support investors rather than the workers they represent in their constituency.