The places to grow ACT left MASSIVE swaths of land available for building. IF anything the Greenbelt should be doubled in size, and there would STILL be sufficient land to build. The problem is more developers sitting on this land and speculating instead of building...why, well because they see it as a finite asset now...government could simply say either build on land that has been zoned within X years or there will be a forced sale to someone who will build!