While I understand your sentiment, that by definition is ultimately accepting your own demise.
Yes the game flows down from the Wallabies in Australia, the main reason why it is struggling so much, however that strategy for growth moving forward will become harder & harder to achieve especially for a sport that is barely struggling to maintain 4th or 5th spot in its own backyard.
As the other more dominant domestic codes increase there market share in Australia, Rugby will simply be unable to compete for resources & players to achieve competitive status for the Wallabies.
10, 20, 30 years from now, you simply won't be able to get it right regardless of what you do as you won't have the tools to do it.
If the game doesn't start to compete with the AFL/NRL/Soccer/Basketball and any other emerging codes at a grassroot domestic level moving forward, you simply will not have the athletes available for the Wallabies to compete with, because they will all be playing other sports.