Only somewhat relevant to the discussion at hand, but I don't think anyone's mentioned that part of the reason routes like LAX-DEN and DEN-ORD see 3-class widebodies is because of maintenance and utilization issues. It's not like UA is going, "wow, look at all of the people flying LAX-DEN at 6am that are paying $2k+" and throwing a 777 frame on the route. Because there aren't a whole of people doing that