A key opponent of the proposal, Vodafone's chief rival Spark New Zealand, welcomed the decision and challenged Sky to develop a "vibrant wholesale market" for its premium sports content, which the competition watchdog decided was too dominated by Sky TV to allow a merger with Vodafone to proceed because it threatened to stifle competition in the telecommunications market for services such as broadband and mobile telephony.
Spark's share price rose at the open by 2 per cent to $3.56.
"This decision recognises that the sports content market in New Zealand needs to catch up with consumer reality, as it has in many other markets around the world. Increasingly, consumers are demanding greater choice and flexibility as to how they access premium content. Today's decision is a welcome step in the right direction," said Spark's general manager of regulatory affairs, John Wesley-Smith.
"The lack of modern on-demand options for how New Zealand sports fans can access 'must-watch' premium sports content today, which would have been exacerbated by the merger, meant the merger was not in the best interests of consumers and so we believe the decision to decline was the right one.
"The lack of a meaningful wholesale market today for Sky's sports content means we and other mobile and broadband providers have been held back from offering our customers new ways to watch sports content in ways that are already the norm elsewhere in the world. That wholesale market would not have developed at all had the merger gone ahead, but will and must develop now."
Internet NZ, representing internet service providers and users, said it had been concerned the proposed merger could raise "network neutrality" issues that could damage competition for telephony, internet and television services.
"Kiwi consumers could have been the losers from the deal," said chief executive Jordan Carter.
"Sky and Vodafone, absent this merger, will be competitors in the ever-changing markets for communications markets."
Among telcos most likely to suffer anti-competitive effects was 2degrees, the country's third largest mobile network operator. Its chief executive, Stewart Sherriff, welcomed the commission's decision.
"The Commission has recognised that competition is still developing, and that the impact of competition from companies such as 2degrees can be reduced over time if monopolies are created," he said.