Because EAS ISN'T a guaranteed profit. Only a fixed revenue dollar amount. IF fuel, landing fees, wages, maintenance, ect. go up the EAS subsidy doesn't so it can very easily be a money losing deal. There is more to this story we don't yet know, I assure you. Delta wouldn't have to park the planes to withdraw the bid for those EAS routes either. They weren't awarded yet so Delta could have simply said they no longer felt thier bid was viable and withdrew. They didn't.....