That's their problem (and granted more holistically the words problem in regard to resources and pollution).
OUR problem is that successive governments keep cramming (importing) more people into Australia at a pace which crush-loads Australian infrastructure and natural resources.
The idiots in canberra rave about our record breaking run of artificially inflated GDP growth - while ignoring completely the massive infrastructure deficit which results. A deficit which undermines every current citizen's utility and lifestyle - and here's the kicker - we all (Australian taxpayers) get to pay for the never ending catch-up infrastructure upgrades like a rabid dog chasing its flea ridden tail!*
*Not to mention the inflationary effect on housing our citizens (un-affordable housing) and deflationary effect on wage growth - more costs on incumbent citizens.