Scientists don't just prostitute themselves to big businesses. Often they do it for small amounts of grant money provided by ideological entities. A scientist's price can vary wildly. Klein's basic premise is correct but it's too narrowly focused on involvement in science influence by groups she already has a dislike for. Of course this is often handwaved away as not being relevant because "the good guys" have less money to pervert things than "the bad guys" do, which leads to "it's ok when we do it because our motives are pure", which even if true, doesn't change the fact that it's still another perversion.