Those who had the qualities of 'great leaders' were people who ensured the company succeeded and thrived after they had left by mentoring and empowering staff while they were at the company and ensuring the right people were hired to carry the ball. This contrasts with many of the egocentric leaders who are household names, and whose companies fell apart after they left. They viewed this as a sign of their success and how they were impossible to replace. Many would view this as a sign of their failure to build a sustainable company.