Certainly it would be our objective to avoid overcapacity in any IM/IT solution. It's just not a good value-for-money approach.
Certainly departments, because they are accountable for their IM/IT investment spend, do have to be able to project the estimated costs with the greatest degree of certainty. They have limited funds, and they're making difficult priority decisions, so we are working with the community towards doing exactly that. And the business cases, if they are done at the right moment with the right information, will help us to do that better.