One thing not mentioned in this otherwise excellent article is the fact that John Key has most of his paper wealth still in what is easily the most corrupt and hated bank; Bank of America and is as such seriously compromised.
By Lewis Verduyn
The Key government’s asset sales agenda is derived from the Washington Consensus – a set of Wall Street-driven policies that were pronounced dead after the global financial meltdown in 2008. The New Zealand government, however, remains loyal to this failed ideology.
Why? The obvious link is Prime Minister John Key – a former investment banker for Merrill Lynch, the world’s largest brokerage failure.
In most other countries, state asset sales have become a last resort on the road to poverty and ruin, but for the Key government, asset sales are “business as usual.” 
So what’s really behind asset sales?
All wealth extraction is facilitated by international and national economic policies, coupled with the private banking system, which together deliver benefits to the financial elite by transferring wealth upward within and between nations.
The state asset sales policy is just one of several reforms under the Washington Consensus, a set of monetary and economic policies designed to allow: the privatization of public resources and utilities, the removal of barriers to foreign investment and ownership, the sale of state assets, trade liberalization, deregulation, the lowering of business taxes, and cuts to public services.
These “free market” reforms are collectively termed neoliberalism. Simply, they provide big business with improved legal access to markets and assets worldwide.