It’s always satisfying when there’s an adequate reason for something that doesn’t recursively involve another event in the past.
I have searched the media and discovered the answer.
The financial crisis of 2007-2008 was caused by the global savings glut.
The global savings glut was caused by the the Asian currency crisis of 1997-8.
And the Asian currency crisis of 1997-8, was, as everyone knows, caused by George Soros.