Corporations are at least somewhat constrained by the need to actually provide some service that is useful to people. Exxon provides energy, McDonald’s provides food, etc. The exception to this seems to be the financial industry. These institutions consume vast amounts of wealth and intelligence to essentially no human end. Of all human institutions, these seem the most parasitical and dangerous. Because of their ability to extract wealth, they are also siphoning off great amounts of human energy and intelligence.