It does. Dentistry is excluded from Medicare entirely, and with many "elective" procedures (i.e. ligament repairs, endometriosis removal, tonsillectomy) you might have to wait it pain for months until you're seen, unless you have private insurance and are willing to pay the "gap".

That doesn't mean to say that it's as bad as in the US, but it does exist.

I'd also go out on a limb and say that there are more poor people in the USA than in Australia per capita, which might factor into how many people can't afford healthcare.