Earlier quoted context omitted.
> foreign buyers are only able to buy newly built homes In theory, yes, in reality the largest single residential purchase in the country was $35m and splashed all over the front page of newspapers. It took them 5 years later to realise it was an illegal purchase by a foreigner after he had a different dispute with the tax office. If that sale slips through what hope do you actually have for any others?
For wealthy individuals they can basically buy their residency by operating/investing in an Australian business. After that they apply for a Permanent Residency visa. Once they are a resident they can purchase whatever property they wish just like an Australian Citizen.
You can buy citizenship or residency anywhere and get the perks, but that has nothing to do with the point I was making here. The point is that laws are useless until they are enforced.