I think that more specifically they'd say that this should be adressed by volountary charity. Which is nice in theory but ignores how inefficient that tends to be.
Not just inefficient. It's literally "the bystander effect" and "division of responsibility" principles writ large.
Bottom line: if everyone is responsible, then no one is responsible. No amount of pithy sound bites or quotes from Austrians will change that. If anything it's a wonder charities have been as successful as they have.
At least with a liberal government system, there is a single point of ultimate responsibility for issues like this: the government itself, as the legal embodiment of "the people" at large.
