Ann: Annual Report to shareholders-EDE.AX, page-27

Unfortunately, 'gsad' I think you're crediting our politicians who control the purse strings for the expenditure on building/repairing our roadways (a.k.a 'goat-tracks') with far too much sense.
To me it seems they're far too preoccupied with getting their own backsides re-elected every couple of years to be overly interested/bothered with such trivial matters as using EdenCrete to actually improve the performance and longevity of our nation's roads.
Besides, just where are they going to find all of the $$$$ required when we are now being constantly lectured by them every other day about the now totally parlous state of our national finances...?? Mind you, I noticed that didn't seem to stop them all from splashing the 'taxpayer's cash' on immensely important self indulgences like their grand old knees-up Canberra parliamentary ball that they all enjoyed last night.
I think it doesn't take too much greymatter to see just why GS chose to focus EdenCrete's development efforts over in the good-ole USofA instead of here in OZtrailya.