Leaks of the text of the Trans Pacific Partnership Agreement show that the United States would like to reverse the work done by the NZOSS to exclude software from patentability in New Zealand. The TPPA may also introduce copyright enforcement regimes that would give large companies the right to censor the Internet as currently occurs in the United States under the DMCA.
Many studies of the quality of source code shows that Open Source is better quality than closed source. It is however no gaurantee of quality. While Open Source has allowed companies to leverage a community and common resources it has also meant that many projects have been taken for granted. An example is OpenSSL, which recently was found to have a vulnerability which has been dubbed HeartBleed.
So, you're an open source developer or tech expert and you want to move to New Zealand... what do you need to know? Here're some informal tips from someone who's been there and done that (but is not an immigration lawyer!): I moved to NZ in 1994 from the US and later started a Free and Open Source Software (FOSS) development and services company, which I ran for 14 years. Although there's certainly plenty of interesting FOSS stuff going on that I don't know about, I think I have a pretty good understanding of how things work here now.