As a result of all this infrastructure expansion we could, also, see the removal/non-introduction of the "soft" refugee/asylum-seeker reforms & have them still put to work straight off the boat on railroads (as my father was in 1950), dockyard construction & other infrastructure projects.
The old "hard" system created less of a drain on the Australian coffers than the later "soft" programs & made integration easier, as most felt a certain pride in having done something for the country & usually tried to continue doing so, maintaining a higher work ethic than many later arrivals. they were, also, "forced" to work & live alongside people of other nationalities &, generally, get along with them.
We could, also, maintain a higher intake of said refugees/asylum-seekers, thus increasing the population (if we stopped building cities on prime farming land) to a point where we could maintain a much larger military presence.
:)
Guy