Key TakeawaysElliott Investment Management again criticized Southwest executives following the carrier's announcement of new revenue-enhancing efforts. The private equity firm blamed Southwest's management for waiting too long to make needed changes, and called for a shakeup.Elliott took a $1.9 billion stake in the airline in June, when it first said it wanted new leadership at Southwest. The friction between Elliott Investment Management and the leadership of Southwest Airlines (LUV) intensified after the ...