This won't happen. NZ keeping Covid out is down to good luck, not competence. On a long enough time scale NZ will face the same fate as those across the ditch.
I'd say the biggest advantage we had was being too small for Fox News to broadcast here
It's only a matter of time.
We have to keep covid / Delta out, would collapse health system and kill tens of thousands (especially Polynesians).
Good time to move away from tourism income, helping us bridge to low-carbon, 21st C fit state.