I know you guys all think accountants run your airline, it's easy to see how that conclusion is reached but ultimately it's the passenger. No Pax = No Airline. Airlines can operate without accountants, but not without passengers.
EK had a twice daily service from ZRH, 1 T7 and 1 A380. now they have 2 half full A380's. Why? because frequent flyers and premium Pax simply stopped taking the 777, in the knowledge that if they departed 6 hours later they'd have a much better journey.
Same with ZRH-SIN you have two direct options, LX in their flying shed or SQ's A380. In C and F it's really a no brainer, no premium pax is ever going to choose* the pitiful C or F cabins on LX with their tiny IFE screens, narrow seats and ikea wardrobe bathrooms when they can be on the silent upper deck of a A380 with direct aisle access, huge bed, huge screen, huge wash room and a chef.
LX have responded to this by replacing their 340’s with the T7, but with exactly the same crappy cabins. Error. LX still fill their premium cabins, but how many are actually paying for it? They’re offering Y PAX discounted upgrades on check-in and then at the gate upgrading top tier Y PAX. SQ don’t.
*Many are constrained by company travel policy.