Originally Posted by
SFTNYC
If I understand correctly, the problem is AF/KL are selling DOD cash upgrades before all GUCs have cleared (in addition to the revenue dilution issue already pointed out - why pay full price for something now you think you may get for a steep discount later)
It must be entirely about revenue dilution, because the Delta I know wouldn’t give two hoots that a premium cabin seat went to someone willing to shell out some extra coin to upgrade from Economy instead of someone getting it for free via a GUC.