[Ieghaehia9]

Is a Wikipedia author participating in a business when they update an article, thus contributing to the service of a better encyclopedia? Is an open-source programmer doing business when they post their GPLed source on the web? Is gift-giving (offering a good) business?

That definition seems to be a bit too broad. So maybe there needs to be compensation. But then the determinists would say that even gift-giving has compensation (in the form of reciprocity) and thus isn't much different from credit. So the compensation should be something closer to monetary compensation. But then barter economies have no businesses. Etc.