> or are you saying you often need to inherit money from your family in order to be able to buy a house in Australia?

Tell me a place in any Western society (outside of run-down rural areas/flyover states) where an average employee (i.e. no ultra-rich tech hipster bros) is able to afford a home before the age of 30 purely by his own savings and income. That is frankly no longer a reality for most people.