On that note, I think it's interesting how glowingly people talk about Herb Kelleher. Wouldn't he be responsible for allowing that tech debt to build until it finally caused the system to fail catastrophically?
Keller stepped down in 2004, so not really. In 2004, replacing 10 years old systems starts becoming a consideration but it's not an active need. Kelly was CEO from 2004 to 2022. And is now chairman of the board. Bob Jordan is the new CEO, since February 2022.