You missed the point, If your argument is that the alternate jersey should be something which drives merchandise sales then making it look like the Springboks or Kangaroo's creates no point of difference. Sporting teams which have 'superhero' round or heritage round jerseys capitalise on the uniqueness of the jersey.
Is a green jersey which looks like South Africa or the Kangaroos different enough to drive new jersey sales? I don't think so.
As for the Socceroos, well their alternate jersey isn't green either, blue is a unique more marketable colour which is historically aligned with Australia and the Socceroos.
But isn't you point that people will be confused by a green jersey because it;s like the Kangaroos?
Before that your argument was that Arsenal couldn't be used as an example because they weren't a national team and didn't play in national colours.
Very difficult to have a rational discussion with you when you keep changing your position.
I'm not sure how may posts you read before you made your intial contribution, or if you don't understand what people have been talking about or you don't want to understand, so I'll summarise for you.
1. Most major sporting organisations (including national teams) have and alternate or away jersey
2. The use of these jerseys has moved beyond a clash of colours and is now geared more for marketing purposes
3. You can do more with the alternate strip in terms of design because you'll offend less of the traditionalists
4. The ARU doesn't have a regular away or alternate jersey - the create one just before RWC because WR (World Rugby) tell them they have to
5. It makes no sense to have a plain white jersey because it's not something that can be sold and marketed because a) it's not our national colours and b) it doesn't look any good c) it won't actually be worn in a game
You are free to hold the view that the Wallabies don't need an away jersey for whatever reason you like. However, what I would say to you is that evidence from around the sporting world suggests that there's more money to be made from selling the alternate jersey, because you can make subtle (and even not so subtle) changes to it every year.
Some of us have the view that the Wallaby away jersey should be green and for marketing purposes could and should be used for an away game once a year. Obviously you don't agree, so at the risk of boring everyone else to tears, it might be a good time to agree to disagree and move on.