I assume you mean using NZ as an experimental place with a view to then justifying expansion into the US on a larger scale, since you brought up Google specifically. As opposed to the EU or something.

I don't think that would work. Look at health care. There are multitude of good systems and mediocre systems, all around the developed world (and the developing, for that matter). There are plenty of example of what to do, what not to do, etc. And yet, you don't have to look too far to find people who are totally convinced that nationalized health care is a mistake, that it can't work, that it will bankrupt society, which all flies in the face not just of basic policy research and mathematics, but fucking real world examples.

And that is because American society does not give a shit what the rest of the world thinks or does, and they do not believe that the same rules apply to them, or that the experience of, say, the UK or Japan could ever apply to them. Certainly not NZ. You could have self-driving flying cars and ubiquitous networking in NZ and still Americans could give you infinite reasons why it will never work and is too expensive and also probably communism.

Now, for going NZ -> literally anywhere else, you have a good idea.