The economics of Herbert Simon and his followers has really changed the way we understand modern firms and, more broadly, the modern economy. It helps us break away from the myth that our economy is exclusively populated by rational self-seekers interacting through the market mechanism. When we understand that the modern economy is populated by people with limited rationality and complex motives, who are organized in a complex way, combining markets, (public and private) bureaucracies and networks, we begin to understand that our economy cannot be run according to free-market economics. When we more closely observe the more successful firms, governments and countries, we see they are the ones that have this kind of nuanced view of capitalism, not the simplistic free-market view.