I would say there that, while the operating companies may make an operating profit, DafT has to guarantee that they do by subsidising them in order that they do, to find franchise bidders. As someone said a couple of years go, DafT outsources the day-to-day running of services, rather than that they are fully privatised. Network Rail is, IMHO, never likely to do so, due to the demands placed upon it, so it needs a payment