Liberal and Labor

Liberal and Labor's media companies are both owned by the same company, STW Group.

The Liberal party uses Barton Deakin and the Labor Party uses Hawker Britton both owned by STW Group. This might explain why the changing of the guard seems so familiar.

On the GMO front, one of STW Groups board-members, Paul Richardson, also sits on the board of WPP Group PLC - the worlds largest public relations and advertising company – which also has Johnson & Johnson as one of it's clients through a subsidiary Burson-Marsteller.
Past/existing clients of Burson-Marsteller include: Procter and Gamble, Du Pont, Coca-Cola, GlaxoSmithKline, Union Carbide, Phillip Morris, Apple, Sun, Facebook, Ford Motor Company, Shell, ExxonMobil and Blackwater.
Burson-Marsteller also handled the PR for Union Carbide's Bhopal disaster and for Babcock & Wilcox, following the Three Mile Island accident in 1979.

https://en.wikipedia.org/wiki/WPP_plc

https://en.wikipedia.org/wiki/Burson-Marsteller