With the recent changes that involve selling food onboard as well as the years of declining service in 1st and coach I wonder why are the big 6 carriers still called "full service" airlines?

Most offer seat pitch that is less than WN or B6 or Song the so called "low cost carriers"

Many of the big 6 offer very few entertainment options on long flights and their f/a's are much surlier on average when compared to the "low cost carriers"

About the only thing I can think of where they have an advantage is Frequent Flyer Programs/Elite Upgrade Programs....other than that there is nothing full service about these airlines....why hasn't this title been taken away from these airlines yet?