777 = fail
If you dont own it outright AND have 100% LFs, completely forget about it.
Well while I agree that it is definitely not the best choice of aircraft for most airlines, saying the 777 is a fail in any way is quite an exaggeration.
I manage to operate them profitably on leases while having them fly routes far in excess of 6.000 miles. So according to any of the common formulas this should be a programmed fail. However, it is not.
I will admit that operating them on leases in a high fuel price environment is a near zero-sum game, but it's still nothing to necessarily bankrupt over.
If you don't need the range of the 777, the 767-400ER is probably the better plane. Arguably, operating the 764 and, on routes that are too long for it, the 763, may always be a better decision.
But the 777 is definitely not the complete failure it is made in this thread and others. Period.