The growth rate for hundreds of year in Egypt was almost zero - people had lots of kids, but most of them died in childhood. Universal large families are fairly recent, and can't last for too long.
You can't build enough infrastructure to keep up with current ridiculously high growth rate, not if you want to maintain a high living standard. Government at every level is doing the best they can, but they are being asked to do the impossible.
Anyhow Australia's population cannot grow forever ...
Whats this? Soundgarden piloting Mazinger? haha