New Zealand is the land of helicopters. They're involved in just about every kiwi outdoor activity. Mountain bikers, kayakers, hikers, hunters, fly-fishers, snowshoers, glacier walkers, and mountaineers all regularly use helis for access. It's only natural that skiers would see this was the transportational equivalent of peanut butter and jelly, and NZ has long had a reputation for great and (relatively) affordable heliskiing.