It's also the BSA doing the study. There's literally no chance of them saying that piracy is in any way OK, even if it were. The only difference between them and pirates doing a study is that the pirates will do it for free while the MBAs will hire a seven figure consultant to tell them what they want to hear.
To lend credence to your argument, can you produce a valid study demonstrating the opposite is true?
I don't need to, as it isn't really an argument, just an observation. The BSA is the Business Software Alliance, they have as much chance of saying that piracy isn't evil, wrong and thoroughly naughty as British American Tobacco would have of saying that smoking should be banned or as the US or Russian militaries would have of saying that they deliberately target civilians and laugh as they do it. They aren't going to say things that go against their interests, whatever the truth is.
Yes, obviously, but that doesn't gainsay their results. I do see a lot of self-serving arguments coming from the pro-piracy factions as well, with no documented studies that credibly back up their assertions. If there were any validity to the pro-piracy position, you'd think it could be demonstrated in a logical manner through peer-reviewed studies.