Will the next crisis start in Silicon Valley?

A writer in a Bloomberg opinion article believes that the next financial crisis will have its roots in Silicon Valley, not Wall Street; author cites that fintech companies are vulnerable to rapid, adverse shocks compared to Wall Street banks because fintech firms are small and undiversified; article also shares that fintech companies are more difficult to monitor and that the fintech industry has not developed the set of unwritten norms and expectations that guide traditional financial institutions. Source