India has generally been a highly price-sensitive market, so it's not surprising that AC couldn't make the route work. Or putting a positive spin on it: perhaps they are spoiled for choice and have sacrificed BOM for an even more lucrative route?
(side note: the proposed use of the 777-200LR, would that mean frames would have been removed from the 15/16 or 33/34 routes I wonder?)
Perhaps we should start a 'pessimist's counterpoint' to the New AC Routes in 5 Years thread: Which routes will be removed within the next 5 years?