9. Commercial Banks
Revenue: $2,300 billion
The commercial Bank industry experienced a major fall in revenue after the 2008 financial crisis and since then the industry has been struggling to make it as one of the biggest industries in the world. Since the demand for loans and credit is heavily dependent on consumer confidence, businesses, as well as the various activities that require funding, this industry has closely followed the global economic industry behind.
Fueled by the strong economic growth of the United States as well as nascent economies like China, Southeast Asia, etc. the global revenue of this industry has increased unprecedentedly.