[seanmcdirmid]

No scientific claims were made in my comment. In the social sciences, including economics, the actors are much more difficult to study in controlled settings, so statements tend to be much more qualitative.

Selection bias is a real thing, however. For example, "All politicians are corrupt" doesn't mean they all are, but given corrupt as a competitive advantage, the ones that weren't corrupt are not successful enough to be known. You don't have to be corrupt to be a politician, but you might have to to be a successful one. Businesses are much more like that given hyper competitive environments.