I'm not saying Arriva/ Northern are blameless, just that a significant amount of the blame should be shouldered by the DfT and Network Rail. If the electrification had been done on time then the private TOC would have had more time to come up with a robust timetable, more time to arrange staff/ training etc.
I'm agnostic on these things but I don't buy the argument that, because the DfT and Network Rail have mucked up in Lancashire the answer to the problem must therefore be complete control of the railway by the DfT and Network Rail.
But this is typical of the DFT.
They are in the luxurious position of dictating everything behind the scenes to the TOC and when something goes wrong getting none of the flack because Joe Public thinks that everything is down to the train operator and the DFT have no involvement.
Unfortunately the problem with the current system is not so much that privatisation is bad in my view, it's that the current system allows the DFT to take all of the control and make all of the decision and never get the blame for any decisions they actually make.
As I said before, the DFT strategy is effectively to privatise all of the blame and turn up for a few photo ops when there is good news to be had and issue a few press releases. When there is bad news they're so MIA that you'd wonder if a search party should be set-up.
If you were someone working in the DFT right now you'd be laughing your head off seeing all these private companies getting the blame for your cock ups, delays and blunders whilst you sit in the background relaxed because nobody is really focusing on you for your own part.