[dragontamer]

Many corporations in China and Russia are state-sponsored. The whole communist / socialist thing blends government and corporations in a way that is alien to the typical US Citizen.

    With the Sony attack we have been focusing on the
    movie, while the movie could've been just an excuse 
    for an attack that was aimed to financially dismantle
    Sony, which it did.*

But they didn't attack Sony proper. If they attacked Sony and stole the tech to PS4 something, then it'd probably be China or Russia.

But these guys attacked Sony Pictures Entertainment... not just any part of Sony. The scope of the hack IIRC doesn't go any further out than Sony's Hollywood branch. Frankly, there aren't any corporations in the world who actually care about a (probably) awful movie being made at some studio. And the Chinese corporations that make movies are distinctly not competing against Sony Pictures.

Sony Pictures Entertainment is the parent company of "Columbia Pictures" and "MGM". Tell me, who the hell would attack "Columbia Pictures" ??