This may be a controversial opinion, but I personally feel that the morality of pirating a video game is entirely dependent on the ethical conduct of the developer/publisher from which said game is being pirated. This isn't to say that stealing is ever morally sound behavior, but I think that it comes on a spectrum.
For example, pirating a game from an honest indie developer who put hundreds of hours of time and effort into a project, and was nothing but perceptive and loyal to their fandom, is an awful thing to do. Those people deserve the money they receive, and their hard work needs to be rewarded and encouraged.
However, then you have cases such as those of Electronic Arts and their shifty business tactics. I think anyone would agree that manipulative, shady, and downright lazy video game development strategies should not be rewarded or encouraged--lest they get out of hand in the way they already have--and therefore, pirating a game from such a developer, in my opinion, comes with far less severe moral repercussions.