What about RAH that is now 2/3's owned by all three majors (AA, UAL and DL)? Talk about obsfucating the lines between wholly owned and privately owned (and publicly owned).
The point is, the entire industry is changing and evolving. The most correct answer won't be obvious for up to a decade.
Apply to a company that you want to work for, that fits your needs and your family's needs and that fits your career goals.