Hmm, I am trying to imagine what the system would look like. Seems like you could borrow some of the features of Bitcoin to create a control structure. Maybe require some type of proof-of-work/approval process by a network of shareholders to approve financial/business transactions. That way, anyone could attempt to participate on behalf of the corporation, but only transactions brought forward by trustworthy agents that are deemed to be beneficial for the corporation are approved. Essentially you would adopt the trust model of bitcoin but apply it more broadly.