Earlier quoted context omitted.
Mortgages in NZ are typically fixed for between 1 and 5 years, with most fixing around 3 years. So 95% of mortgages will always be rate adjusted in the next 3 years.
Same as Canada. I assumed it was market forces but no, it is regulated this way! Seems like a bizarre plan to make your populace less resilient to rate fluctuations.
Freddie Mac and Fannie Mae or whatever they are/were take those mortgages and basically convert them into government bonds that are then sold out.
Otherwise getting 2% for 30 years would be nearly impossible (and it IS impossible in many countries).