Without exceptions for air travel, It will be tough as social distancing requirements will make air travel a rich person's form of transport. If the government does not like that, then it should subsidise the true cost of a ticket allowing for the 2m covid distancing required in an aircraft.
Peter's attitude does reflect a fairly common attitude in NZ politicians on both right and left. Many NZ politicians seem to think that NZ companies should act as charitable organisations administering the politicians' desired social policy yet for their prices not to reflect that.
When NZ shareholders decide they can't be donors to a charity, then foreign investors step in and become the owners, and hey presto you get our current situation of having a tiny share market and much of business being foreign controlled (and NZers investing in expensive land instead!)