Muldoon had left NZ moribund in the 70s and 80s, so market reform of some kind had to happen. But like a lot of reactions to the status quo, it went too far. Lots of folk saw their jobs disappear entirely or get shipped overseas, government regulation and assistance gradually dried up in the form of selloffs, services contracted out to profit seekers, or user pays. Foreign entities of all stripes came and bought up land, infrastructure and companies, and the capital that went with it.
The idea was that we would get easier access to foreign capital, using it to build better businesses and therefore generate better jobs, and become rich selling to a newly accessible world market. While we have had some success (especially in tiny niches), the reality is that we struggle to compete with bigger, richer countries that are closer to markets, and are still doing what we've always done, which is farming.
Many already well-off folk have done very well from neoliberalism, but the rising tide never came close to lifting all boats. The former working class have been left behind as their decent paying jobs have disappeared overseas and been replaced (if at all) with service industry jobs of poorer pay and unstable hours and tenure, coupled with runaway increases in the cost of housing, utilities, education, healthcare and food. Labour used to represent these people, but has been a Blairite 'third-way' party for 20 years now, pandering to the so-called centre and differing little from the Nats.
Both parties have cynically fostered resentment of the biggest victims of neoliberalism, painting them as bludgers and drug addicts. Is it any wonder these people are losing faith in our democracy?
Obviously this refers to the NZ experience, because it's what I know. But the stories from other western nations sound pretty similar.