NZ does have a major point of difference from the US - the courts will often "award" the costs of the case from a successful defendant to the originator.
This tends to discourage abuse of the legal system for intimidation, as there is a risk it will backfire on you and you will end up paying for all lawyers involved.
It's a much smaller risk to the side with money. If you didn't have that much money to begin with, you may not even be able to afford defense, or you have to rack up huge lawyer bills for an uncertain outcome. And in the case of companies you can't even represent yourself, you have to have a lawyer. Also, awarding costs may or may not happen and is separate from the outcome of the case. So it might discourage _some_ abuse, but not much.
This tends to discourage abuse of the legal system for intimidation, as there is a risk it will backfire on you and you will end up paying for all lawyers involved.