"BPM had its origins in two public campaigns that revealed widespread concern about media in Aotearoa ... the successful campaign in 2010 opposing the mooted commercialisation of RNZ; and the unsuccessful campaign to save TVNZ 7, which was an ad-free TV channel broadcasting from 2008 to 2012."
https://www.publicmediaalliance.org/better-public-media-becomes-affiliate-of-pma/
Hard to believe now, but Key's NatACT government seriously proposed commercialising RNZ. Presumably with the long term goal of hocking it off to the highest bidder.