Love a good conspiracy story don't you, not everyone's out to get you you know.
Having lived up north for a number I years I can testify as to just how bad the train lines are connecting Leeds/Sheffield, Manchester and Birmingham. Why on earth would potential investors in these cities chose to set up shop there over London in its current state, its not going to improve by sitting and let it rot or continuing with temporary fixes. HS2 is without doubt progression for the north, they're is overwhelming support for the plans there, the negativity is coming from from the home counties and Warwickshire understandably as it provides no real gain for them.
Do you not think HS2 will benefit the economies of Leeds, Sheffield, Nottingham and Manchester?