There remains, however, one glaring problem with the moral case against redistribution. For implicit in the imperative to let the productive keep what they earn is an assumption that the markets distribute income in a way that accurately reflects everyone’s relative economic contribution — and therefore is fair. But is that true?

In an economy of self-sufficient farmers and ranchers, people can point to something and credibly claim, “I produced that” or “I built that.” But in a modern, complex economy, the connection between what is produced and who is responsible for producing it is not so obvious. Modern business is a team sport…

These shifts suggest that the way markets distribute rewards is neither divinely determined nor purely the result of the “invisible hand.” It is determined by laws, regulations, technology, norms of behavior, power relationships, and the ways that labor and financial markets operate and interact. These arrangements change over time and can dramatically affect market outcomes and incomes.