Companies hire Accenture and other firms like that usually because their demands are so challenging that only big firms can give a shot at that. On top of that usually the contracts provide so much strong guarantees to the Client that only these firms can afford and this is a tremendous incentive for closing the deal. It's a common strategy also to sell the initial contract at low margins with the outlook that the deal will continue and will bring other money with less risky maintenance streams. In a short summary in the vast majority of the cases these kind of projects already start with a lot of risk and on shaky grounds.