It's not a Ponzi scheme, it is a simply a result of basic economics, supply and demand. With population growth demand is growing, but the supply is hampered by

It's not a Ponzi scheme, it is a simply a result of basic economics, supply and demand. With population growth demand is growing, but the supply is hampered by lack of sufficient trades persons. From reading news from around the world, the problem is not limited to Australia. Globally workers are tending to avoid work that requires physical exertion in a wide range of outdoor weather conditions. In the post-war years, immigrants often pooled their resources and built their own homes. These days most immigrants just want to move into comfortable new homes.