Taxpayers shafted again with Sydney Metro $4b over budget

I have noted repeatedly that one of the key reasons why Australia’s high population growth (immigration) is lowering the living standards of existing residents is because of the strain that it places on infrastructure, which inevitably leads to more congestion on roads, public transport, as well as more expensive housing.

Basic math (and common-sense) suggests that if you double the nation’s population, you need to at least double the stock of infrastructure to ensure that living standards are not eroded (other things equal).

In practice, however, the solution is not that simple. In already built-up cities like Sydney and Melbourne, which are also the major magnets for migrants, the cost of retrofitting new infrastructure to accommodate greater population densities is prohibitively expensive because of the need for land buy-backs, tunnelling, as well as disruptions to existing infrastructure.

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