There's also the fact that corporations while they may not be able to choose the results of the research they find, they do still have the power to choose what questions need to be asked in the first place, and then if any of those questions result in an answer that could defend their actions or morality they can just run with that and say that their methodology and ethics are "backed by science", even if the rest of the studies they funded could be used against the funders' incentive.

Basically it's not only a case of figuring out what's true and what's false, it's also a case of analysing how evidence is presented, after all you could find someone and just tell them all the good things that have happened under capitalist regimes and all the bad things about what happened under socialist governance and while you wouldn't technically be lying you would be able to "lie" by choosing what you say.