"This reflects what we see all around the world; increased pressure on the public purse strings, a re-evaluation and reinvention of what these organisations are about and making sure that they are really adding value in this modern age."
Professor Milne said there was "no question" a cut in funding would have an impact on tourism organisations but said it begged the long term question if there was value in public money being invested in it.
"I think if you look around the world there's definitely a push towards what we call the co-funding of these kinds of organisations trying to increase engagement from the private sector who are usually already paying some kind of duties or fees.
"But at the same time governments around the world are very aware that they still need to be playing a role if they're going to have some say and influence over this really important sector."
He said people often thought tourism agencies just dealt with event promotion and visitor numbers but they had much more to offer - even when things went wrong.
"I think we need to realise it's not just about promotion and raising visitor numbers it's also about this issue of what happens when things do go a bit awry and we can see those roles are very important in places like Christchurch.
"New Zealand had to play that role on an international level when we had the earthquakes. We were out there pushing that message forward."
Professor Milne said tourism was and would continue to be a big part of New Zealand's future and while it may be ideal for tourism agencies to be funded through the private sector there were arguments against that model.
"One of the arguments about tourism is that the benefits it brings to a region go beyond just enhancing the profit of particular business entities.
"There are economic and, what you might call, psychic rewards from having your region attracting events that aren't just of interest to visitors but locals too."