In an ideal universe it was certainly true that the Corporate Court held to the concept of "innocent until proven guilty," but the Court was not a court of law. The justices were not appointed by any government, and the corporations they represented were not subject to any government’s law. The megacorporations were laws unto themselves, which meant the Corporate Court , which settled disputes between them, was not bound by the rules and procedures of any legal system but their own. Osborne knew she didn’t need definite proof that Renraku was a threat to corporate stability, not if she could convince the other justices it was in everyone’s best interest to see Renraku humbled a bit.