Media bosses, like policemen, are not always loved but they do a difficult and essential job. The “monsters” in the title refers to the size media companies have reached over the years though, not to the personal characteristics of the leaders. That, as the saying goes, is another story—and a lively one. The second volume of Sally Young’s planned trilogy on the history of Australian media ownership covers the period from 1941 to 1972—from Pearl Harbor to Whitlam—and on the size its business reached in that period, with extension into television as well as big increases in newspaper circulation, mergers…