Don't forget that outsize cargo represents only a small percentage (actually a fracture of it) in overall movement. While it is good to keep versatility especially if it not incurs extra operating expenses (like 747 NCD vs SCD), $/lbs/nm or EUR/kg/km is ruling the market and I believe we can see the trend very clearly with 744BCF, 777F, MD11, A330F etc. Surely there is a place for 747NCD on the market but in most cases beancounters will prefer to turn down 0.5% of the bookings in return for lower cost for the remaining 99.5% of the cargo.
Russkies are still there for real outsize job with AN124, so you would not miss your spare GE90
