See the odd one out here? NZ archives open on a part-time basis when the others allow full-time research, some even opening at weekends (great idea in terms of public accessibility).
When Archives NZ announced they were slashing their opening hours in 2019 they cited two main reasons: declining user numbers and the need to focus on digitisation.
1. They are a public service, not a commercial radio station.
2. The digitisation programme has now been canned.