Comment Comment by theonlybutlet FT do a nice overview of the top reasons in the below article:https://www.ft.com/content/02228292-b88f-11e6-961e-a1acd97f6... parent theonlybutlet 2 years ago
https://www.ft.com/content/02228292-b88f-11e6-961e-a1acd97f6...