I had a paper route as a boy. It was definitely a business, as I contracted with the newspaper publisher for it. I bought the papers from the publisher, delivered them, and collected money from the customers. How much money I made was a function of how many customers I could sign up for delivery. I made enough to buy a car.
Have we already gotten to the part of the conversation where you just admit that your entire understanding of economics is based on a handful of personal anecdotes?
Real estate agents operate in much the same way.