Oz rugby can't go it alone. You've been listening to the ARU Chairman's once a month propaganda in the media while he was working in the back room to secure a deal with NZ.
Unlike you I don't need to listen to anybody's propaganda to get my information, because I'm actually here on the ground experiencing the problems first hand...
I legit couldn't even remember who the ARU chairman was off the top of my head, and had to look him up to jog my memory. Which should give you an idea of just how irrelevant the guy, the ARU, and the sport has become in Australia BTW.
The ARU has 3 big problems when it comes to engaging with fans, both new and old, in Australia.
• The rule set doesn't produce a product on the field that is competitive with the AFL and NRL anymore. They need to be largely reworked and streamlined, consequences from World Rugby and the other unions be damned.
• The vast majority of Australians couldn't gives two shits about the international club sides, including the Kiwi sides, which makes more than half the Super season effectively dead rubbers commercially. As an addendum to this point, restricting the participating teams to pseudo state rep sides has murdered potential growth in Australia as well.
• Finally, not having a GF and annual national champion has completely murdered the sport's publicity, and interest and growth. Though I'm sure it's great for NZ to have the Australian sides jobbed out to them all the time, to borrow a wrestling term, it's been cancer for the sport domestically.
You fix, or at least go a long way to fixing, all those problems and more, by cutting ties with the NZRU and starting your own national league, and if you think the ARU wouldn't be capable of that then you're a fool. Just getting Twiggy and a broadcaster onboard would get them most of the way there from the get-go.
Like in the early 70s (when NZ provinces started playing the two Oz states after the Wallabies lost to Tonga) and late 80s (when the pre season comps between Oz and NZ started) NZ rugby is again helping to support Oz rugby this time via a favourable TV split.
Unlike how the NRL/ARL stacks international league to favour the Kangaroos, NZ rugby wants a genuinely strong Wallabies.
'Helping' lol. Sure, if you're definition of 'helping' is alive but firmly under control. A golden cage is still a cage, and this particular golden cage ain't really all that golden.
The NZRU knows that they need Australian RU to thrive, but also that if RU ever gets popular enough in Australia that it's even just reasonably competitive in the player market, say something like 30% of the top talent that's currently going to the NRL and AFL went to RU instead, that that would be the end of the All Blacks as an institution, and they're doing everything they can to prevent that.
BTW, there wouldn't be any other competitive international RL sides outside of Australia and England if the NRL actually stacked international RL.