PapaD and Page were originally targeted because of their connections to Leviathan and Noble Energy, respectively.
Australia and UK were eager to get a cut.
Alexander Downer is basically the Brennan of Australia's spy agency.
He's already been caught in an industrial spying scandal once before.
https://independentaustralia.net/politics/politics-display/exclusive-alexander-downer-spies-for-five-eyes-part-1,11113