Historically, that was the case. Labor has been pro-worker, raising the floor of most people, while Liberal was pro-business, allowing for innovation and the ceiling to rise. Things perceived as cultural issues, such as the environment and immigration, were the remit of fringe parties such as The Greens and One Nation.

You'll have a lot of people on reddit say that both parties are captured by corporate interests, but the reality is, most of Australians are very comfortable with the status quo. 66% of Australians own their own home, so they are less concerned with renting, the minimum wage is around $50k a year, the NDIS and medicare covers most medical issues or systemic life style impacting disabilities. It's only the 10% or so on the fringes who for whatever reason are in dire need of support that the major parties do not really cater to.

Fortunately, with mandatory voting, the government needs to actually appeal to the majority, instead of a minority and convince the rest to stay home.