A rising tide floats all boats.
Or is trickle-down working for the majority of people around the world that have moved out of extreme poverty? In 1990 36% of the world lived in extreme poverty. In 2015 that had dropped to 10%. Is that trickle-down?
The ultra-wealthy are obscenely richer, but that doesn’t mean that the poor are not better off too.
I agree with your sentiment: trickle-down doesn’t feel like it is working in New Zealand, but I’m unsure how much of the feeling is based on fact versus envy.