The poor decisions smart leaders make are sometimes intentional and sometimes accidental, but they always follow a clear pattern of hubris that ensures even the most successful enterprise can be run into the ground.
Most businesses are run by highly intelligent people, and when businesses fail, it's usually due to these smart leaders' boneheaded mistakes. Even when a product--or lack of one--is at the center of the spectacle, flawed thinking by very smart people is often what made things fall apart.
https://www.inc.com/travis-bradberry/six-reasons-smart-people-fail.html