We're told to put plastic/metal in one bin and paper in the other. But this includes pizza boxes with bits of food on it; things like pringle cans which are a mixture of paper and metal. And there is all sorts of plastics.
It's simply not believable that they have an efficient means of separating and recycling this mess.
They even have trouble recycling glass; surely the easiest to recycle. http://www.abc.net.au/news/2017-08-07/recycling-companies-fo...
Also relevant: http://theconversation.com/australian-recycling-plants-have-...
I believe there's regulatory capture or at least heavy revolving door activity. Politicians retiring and then being put on the board of recycling companies.
And we subsidise them: http://www.epa.nsw.gov.au/working-together/grants/business-r...