Parsnip
its a lot down to the Business traveller, either not travelling, or using the train because the times are more convenient.
You are simply wasting more time on this point, it's now become a classic "chicken & egg" argument i.e. did the business travellers not travel because there were no services?, OR were there no services because there was a lesser demand for business travel?
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Marketing departments have the job of aligning supply & demand whilst identifying as to how to stimulate both & being able to act accordingly whether the purpose being of selling to airlines or to the public, something that again MME/DTV have failed hopelessly!
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