This paper presents an analysis of trends in concentration of electronic media industries in Australia over the past two decades. The industries examined include Broadcast television and Radio, Pay Television, Film and Video Production, ISPS and Search Engines. The related research is a component of the International Media Concentration Research Project headed by the Columbia Institute of Tele-Information and involving participants from over 30 countries. The goal of the project is to go beyond the rhetoric to an academic, empirical, dispassionate, and data-driven analysis of industry concentration trends and their drivers. The project has no agenda beyond understanding what is happening and why.