http://zqktlwmjdp2du33fblsp5otjguwqr2rxm2wjghoctmnk3iqqy5pw5mqd.onion/wiki/The_Matrix
It is not mutually exclusive to any other economic system, and examples of gift economies exist on top of capitalist, communist and socialist economies. Gift culture has brought forth some of the most astounding recent achievements of the human race, including the scientific research community, much of the World Wide Web, the entire Open Source movement, vulnerability and security research, and Wikipedia, just to name a few examples.