What was the electricity industry thinking?
Did it think it could get away with generating super profits from a network monopoly forever without a political reaction?
In the world of corporate and government relations there's a vague concept referred to as a "licence to operate". It means that large companies or departments know there's only so far you can push the public and politicians before they react by, in effect, removing that licence to operate and regulating profits lower.
Large companies do their best to push their profits to the limits of that public mood and extend that red line through "good works" in the community, such as sponsorships. They also do their best to obscure the extent of the super profits, citing reasons such as financial stability.
But sometimes the sheer size of the profits becomes so obvious that it invites a backlash. The National Government realised the power-consuming public was nearing the end of its tether in 2008, so it acted to force more competition with its 2009 sector review and the very successful "Whatsmynumber". It helped increase the switching rate over the past couple of years towards 20 per cent. Annual residential power price inflation halved from 8 per cent in the decade from 1998 to 2008 to 4 per cent since then. But it is still running at quadruple the general inflation rate and it's clear that "competition" hasn't worked to reduce or even restrain power prices for voters, as opposed to businesses.