Forcing passengers to relinquish seats they've already sat down in is clearly a terrible policy. Once you're in your seat you should be "locked in", except in e

Forcing passengers to relinquish seats they've already sat down in is clearly a terrible policy. Once you're in your seat you should be "locked in", except in exceptional circumstances. Pulling someone out of a seat has a much higher emotional (and PR) cost than denying someone boarding in the first place.