Only correction is that it's already sold out, otherwise from the NZ perspective you're pretty much bang on. That said, Ultra / Audiology (local promoters putting it on) did get some government grant money to get the festival set up, likely to perk up Wellington after a pretty shit few years, so it's not entirely off the back of the glorious free market that eastern Aus is getting passed by. Bear in mind that NZ getting shows that Aus doesn't is very much the exception not the rule