See, if you as an outsider want to make sure that all parties are held to the same standard then you should be willing to apply that standard to your worst enemy as well.
Note that I am not in any way defending Sony or their conduct, I just want the same standard that I'd like to apply to downloading music to apply to this instance of possible copyright violation.
Sony is a terrible company and they deserve to go down because of the way they've harassed private individuals, they've lobbied for ridiculous legislation and have done an enormous amount of wrong. And in spite of all that you should still be even handed in dealing with them.