You're not wrong. The basic premise of it seems fine. We have money, which can be a convenient way to do trades. I work in one career, but it doesn't give me food. Instead I get food from the store. And they need it from the farmers. But having food doesn't provide them with their other needs, so they go to another specialist. But that specialist doesn't get everything they need, so they come to me. So using cash is a convenient way of exchanging goods and services.

And some people enjoy running a company. They see a product people need or want, and maybe it's something they also need or want, and they enjoy making it, so they make a business out of it.

The basic premise of it makes sense. I prefer us to have another system, especially since I can see the issues with it. But for the most part, I also wouldn't hate it as much if we weren't in the over aggressive form of capitalism we have now.