It’s cause in Australia people go to Starbucks or Gloria Jeans for frappucinos and things of that nature, whereas the “coffee culture” here is for flat whites and cappucinos created by baristas. Australians tend to be coffee snobs and prefer local shops for their actual coffee. If they want a sweet icy drink though, sure Starbucks might be an option. And the places Starbucks does well in Sydney are places where tourists are — the QVB and near tourist hotspots. The average Australian doesn’t drink sweet coffee.