Southwest pioneered lower cost domestic travel under founder CEO Kelleher. It did not charge fees for checking in bags and seats were not assigned. This model is now being questioned as baggage fees are generating $1.3 billion at American, $1.2 billion at United and $1 billion at Delta Airlines. Even a smaller airline like Spirit generates $1 billion from baggage fees. Additional sources of income are passengers charged for seat selection. Southwest generates about $70 million from baggage fees and does not charge for seat selection. Southwest sees not charging for baggage as part of its culture and current management is not changing the status quo.
Other problems are that Boeing can deliver only a fourth of the plane Southwest ordered. As a result the airline is facing a crisis and Eliott Investment Management now owning 11% of the company is pushing for change including ouster of the CEO and the Board.