Obviously BA must be sure, or blinded by colourful presentations showing this and that = ££££££, that there are enough people willing to spend out there.
Can't see too many Americans with their higher budgets suddenly dropping CK etc. to become BA Gold or GGL. Might be some double dipping, but as with BA, a lot will stick to what they know.
Maybe a super large company has promised 'we'll fill X seats Y times a week at £Z"?