I've asked a lot of really senior guys this and you get varying answers depending on their phase of life. Some were going through nasty divorces right about the time majors were calling. Some had interviews at majors that didn't go well. Some also refused to interview at LCCs. One captain told me "Southwest wanted me to write them an essay about why I wanted to work there. Fxxx that. They should want to hire me for me." It's a pretty mixed bag.