One lesson of this tale is that capitalism doesn’t really work when it relies on the profit motive alone. If everybody is just chasing material self-interest, the invisible hand won’t lead to well-functioning markets. It will just lead to arrangements in which market insiders take advantage of everybody else. Capitalism requires the full range of motivation, including the intrinsic drive for knowledge and fairness.
Second, you can’t tame the desire for money with sermons. You can only counteract greed with some superior love, like the love of knowledge.
Third, if market-rigging is defeated, it won’t be by government regulators. It will be through a market innovation in which a good exchange replaces bad exchanges, designed by those who fundamentally understood the old system.