New Zealand Law
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Some businesses have substantial market power. This in itself is not illegal. But, when a business has a substantial degree of market power and takes advantage of that power for an anti-competitive purpose, competition can be harmed. Competition delivers lower prices, better quality, more choice and greater innovation to New Zealand consumers.
Sometimes a business with market power can take advantage of its market power to drive a competitor out of business or to prevent a new competitor from starting up. This can reduce or eliminate competition from a market, harming consumers and the wider economy.
Section 36 of the Commerce Act makes it illegal for any business with a substantial degree of market power to take advantage of that power to deter or prevent rival businesses from competing effectively.
Section 36 - key points