It has nothing to do with 'capitalism', in case you think the alternative is socialism where everything will be perfect (you'll be lucky to get any service at all when salary is not tied to customer satisfaction, as Russians used to their country's culture found to their pleasant surprise when they crowded up at the first McDonald's just before the USSR broke up). And nothing prevents 'workers' from pooling their resources to run a business of their own as a cooperative and split the profits..as well as the losses.

Australia has some of the highest minimum wages in the world (with its own negative effect on small business owners) and you pay exactly the sum total of what you ordered on the menu as all prices are quoted inclusive of applicable taxes. Tipping is your prerogative if you feel the service was exemplary.

The US needs to get rid of the idea that it is the customer's responsibility to pay servers' wages over and above what they're already paying for the food.