There\u2019s a strong business case behind the proposed merger between Nine Entertainment and Fairfax Media, with both companies needing to bulk up to take on the challenge posed by digital platforms such as Facebook and Google. But it\u2019s the first deal of its kind under Australia\u2019s revamped media laws and it remains unclear whether the country\u2019s competition regulator will raise concerns about the merger\u2019s impact on media plurality.