Also note that this publisher didn't buy the rights until after the songwriter had died, nearly a decade after the original release of "Down Under." That's probably a factor in why the judgment was so low and not the 40%-60% the publisher requested.
Of course, I am just speculating as a layman...I know nothing of Australian law except what I read in news reports.
Time was songs written in 1932 would be public domain by now.
I loathe the corrupt entertainment industry which has bought the lawmakers.