How does the economy depend on the volume and focus of our needs? Where do people get the benefits of life?

1. People form effective demand for certain goods and services, and firms are interested in selling us a product and providing a service, making money on it. The growth in effective demand stimulates the growth of business, the expansion of its activities (purchase of equipment, hiring more employees, etc.) and an increase in the total profit from activities.
2. Some of the benefits people receive “free”, for example, solar energy, fresh water. Most of the benefits people acquire from the producers of these benefits.