Because Apple DOES have a presence here in New Zealand,
You are asserting Apple has a presence merely because it does. You are also asserting that by not having any stores or employees or offices, Apple has a presence. That is illogical at best.
that is how they are able to sell into schools and to Government Departments, they MUST be registered in New Zealand as a business in order to get a Tax ID in order to collect/pay GST (sale taxes).
I don't know: Does Apple sell via 3rd party? Maybe you should find out first.
The volume of sales to schools (above $50,000) a year forces the issue.
Volume doesn't matter if Apple does not sell directly to schools. Again find out first before you make the assertion.
They will have a registered office (be it with an accountant/lawyer).
Then find the registration.
Colgate is registered in NZ as a company, how (or why) Budweiser gets here I don't know. But I DO know Apple is selling direct into New Zealand and must have a tax ID to be able to do so.
My question which you did not answer: Do you force upon Colgate and Budweiser the same provisions you wish to force upon Apple? If no, then you are biased.