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In Capitalism there is the seen and unseen. In the restaurant the customers benefit from customer service that can be seen as well as deliveries made to the restaurant that the customer doesn't see.
And the beauty of Capitalism is that all those things happen without a single person or politician knowing how to make a perfect restaurant . Because under Capitalism the truck driver wants money so he delivers utensils to the restaurant, the server needs money so he goes to work there, and the janitor wants to make money so he shows up to clean the place.
In their quest for capital (money) they all make the restaurant run smoothly with no instruction from a Government bureaucrat. Think about that, it's fun learning Capitalism.