KLM
P.S. I don't think KLM will care. KLM will only be interested in their own yields. Providing those yields remain above the minimum they seek for the route, or a more lucrative yield can't be achieved by deploying the aircraft elsewhere, then I think KLM will remain.
Of more concern to KLM right now must be the slow but steady decline in passenger figures recently and I'd be interested to know how close we are to that yield minimum.