Earlier quoted context omitted.
Thankfully we have great consumer laws in Australia. This is referred to as drip pricing. It also makes practices such as mandatory minimum tips illegal, which would make someone from the US’s head spin. https://www.accc.gov.au/consumers/pricing/price-displays
The only case I can think of where there is a mandatory minimum tip in the US is that a lot of restaurants will charge a minimum gratuity for parties larger than 6-8.
You're expected to tip north of 20% for good service.
Sure, in theory this is not strictly mandatory. Socially, if you don't play the game you're a leeching pariah.