When people go out to eat, they get to choose where to go. They also get to pick what to eat and what to drink. The owners of the restaurant also get to choose what to sell, how much to sell it for, and how much food customers get for each price.
Yeah, I was in the mood for a burger.
This food is really good!
For entertainment, people can choose to go to fairs, theaters, and other places. Plays have their own admission prices that the producers set, and the props and costumes can be bought or made with materials from stores. The people watching the play were able to choose which one at what time.
Wow! This play is really good!
I know, the actors are so professional!
In a store, customers are free to choose what to purchase, how much to buy, and where to get it. The product owners gain profit from sales, and can then choose to make more, stop production, or even start a new product line in order to try to make more money.