Can't fault NZ courts
The guy has a history of evasive manoeuvre when faced with the consequences of his actions. One of his convictions in Germany resulted from his arrest while /en route/ for his hideaway in Hong Kong.
(as for the source of his fortune: in addition to the big bucks he made with Mega-* companies, he was once boasting about being able to make millions by selling technobabble to clueless, greedy investors (for which I, for one, can't blame him).
He also invested a lot of time and some money in insider stock trading scams, he's been convicted for one, I can't help but think there might have been a few with which he got away. So, yes, helicopters, why not.
Plus, with the help of his army of l33t h4xx0rz, he allegedly rooted Bin Laden's bank.... (where's the sarcasm tag when you need it).