The loss of diversity of voices in a merger of publishers NZME and Fairfax New Zealand would be "virtually irreplaceable" and the Commerce Commission was within its rights to weigh up that issue in rejecting the deal, the High Court found.
Justice Robert Dobson and lay member Professor Martin Richardson rejected the dominant publishers' appeal to overturn the regulator's decision, saying the commission was within the law in leaning on the loss of media plurality in turning down the transaction and agreeing that a substantial loss of that diversity of voice would be "virtually irreplaceable".
"We cannot be certain that a material loss of plurality will occur because of the factors we review that would hopefully assist in maintaining it," the judgment said.
"However the risk is clearly a meaningful one and, if it occurred, it would have major ramifications for the quality of New Zealand democracy."
NZME, which owns the New Zealand Herald, and Fairfax tried to argue the reliance on the loss of media plurality was outside the regulator's legislative framework, and that even if it was within it, the quantifiable benefits of the deal were such as to warrant approval.