Jamie Dimon is a dipshit who brings practically nothing to the table. He shows up to the building, terrifies the people around him, pisses people off, shits in a waste basket and hires college interns to provide fresh blood infusions to treat his wrinkles.
Executives rarely bring genuine, functional value to a company, and that definitely includes Dimon. What a notorious fuckwit. JPMC is one example where the head could be cut off and the company would actually benefit from it.