Many people think the Salesforce CEO position was always filled by its co-founder Marc Benioff. But there was a two year period, from 1999 to 2001, when a guy named John Dillon was brought in to lead the company as CEO, while Benioff was Chairman.
According to some early Salesforce investors we spoke with previously, Benioff wasn't seen as the right person to be CEO at the beginning. So the board hired Dillon, a former Oracle and Hyperion executive to provide better guidance.
But Dillon and Benioff didn't get along well, and eventually one of them had to go. Dillon was eventually shown the door, and he's now CEO of a company called Aerospike.