It's not that bad, really.
Ratifying the ISOFIX standard will be expensive for everyone involved, and my guess is that it's just not that high a priority given the existing standard already does the job. You also have to realise that given the small market size that Australia presents, there's not a lot of commercial incentive for companies like Safe n Sound (and their parent) to spend the money putting their new products through testing to prove that they're as safe as other products they already produce and can already sell on the Australian market without additional testing required.
You really do want the government laying down standards though - the alternative is absolute chaos and destruction as cars and products that simply aren't safe run around damaging property and injuring people.
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