I'm not against nationalising rail in principle, as railways are natural monopolies it's quite difficult to actually create a properly functioning market for them. Having said that, the history of public ownership of the rail system in the UK isn't particularly encouraging. The current system, while hardly perfect, is nowhere near as bad as what came before. I don't see why it matters where the profits go, they provide a service, if they can make a profit while doing so fair play to them. If they're not providing an adequate service then the government should be able to enforce rules to ensure they do or they don't get paid, if that doesn't happen the solution is to create a system that does do that, not nationalise everything.
Rail fares have increased by 56% since 2006