A link to the interview. She is posed a question about monopolies at 20:50, and financial crises at 23:50. https://youtu.be/1ooKsv_SX4Y
Her point seems to be that companies can only establish monopolies through the coercive powers of government with lobbying, subsidies, land grants, and so on. Her point about financial crises is less clear to me, but she holds that in a pure free system, neither of these things will happen.
I have always assumed that the exact opposite was true, that monopolies and financial crises stem from the free market, but I haven't studied economics so I wouldn't really know. What is the scholarly consensus on this subject?
I'm posting this question in both /r/AskHistorians and /r/AskEconomists to maximize the amount of answers, especially since this sub gets substantially more traffic and answers. Seeing that the question is about economic history, I'm hoping it complies with the sub's rules.
Your question is an economic one, not a history question (unless your asking what did people at the time believe). You should try /r/askeconomics
Making a statement about the whole world and all financial crises is beyond me. So I'll narrow the question here a bit to the Great Depression.
To take the Great Depression as an example, in 1963 Milton Friedman and Anna J. Schwartz published a book, A Monetary History of the United States, 1867-1960. This book argued that the Great Depression was caused by monetary policy mistakes by the Federal Reserve and other central banks around the world (note, I'm not American, I understand the Federal Reserve has a bit of a funny set up and isn't quite like the Bank of England, so "central bank" might be the wrong term to apply to it).
This was 1963 of course, but Bernake's speech to the Federal Reserve illustrates that while A Monetary History is not uncriticised, it's not been overturned.
I might add some more examples later about other financial crises as I think of them.