Seen any brickworks lately? The last one I remember, at Kamo, closed down years ago. I doubt any remain in New Zealand, which means any bricks used here today, must be imported.
Freighting heavy blocks of cooked earth from overseas, when we have plentiful unemployed labour and excellent resources of brick-making clay at home, seems crazy.
Why do it? Assumedly because overseas manufacturers produce cheaper bricks, which makes economic sense on paper, although in every other way - carbon miles, under-utilisation of local resources, loss of skills, plant, local jobs and, possibly most importantly, of strategic self-sufficiency in a tiny far-flung island nation subject to the fickle winds of economic sea-change, for instance - it's nonsense.
The same has happened to woollen mills, tanneries, glassworks, railway workshops, car assembly plants, clothing, china and footwear producers, and hosts of other once-thriving manufacturers. Hardly a week goes by without announcements of mass regional job losses.
Local industries have closed or trans-located to low-wage economies where desperate people work for pittances. This has the incidental effect of importing a lower standard of living (and products) rather than the preferable option, which would mean paying NZ-equivalent living wages (and attending to sustainable quality) wherever our goods are manufactured, thereby exporting a higher standard of living and ecological balance globally, so all might enjoy the kind of productive work, leisure, peace and security governments are supposed to promote.