If someone in IT is behaving monopolistically, a possible defense by the rest of the world is to obtain and publish their source code, thus reducing the original owner's power and levelling things a little. Such an act may not be irrational - if it is a form of self-defense.
Suppose someone has built a self-improving AI, and it's the only one in existence (hence they have a "monopoly"). Then there might be two possibilities, either it's Friendly, or not. In the former case, how would it be rational to publish the source code and thereby allow others to build UFAIs? In the latter case, a reasonable defense might be to forcibly shut down the UFAI if it's not too late. What would publishing its source code accomplish?
Edit: Is the idea that the UFAI hasn't taken over the world yet, but for some technical or political reason it can't be shut down, and the source code is published because many UFAIs are for some reason better than a single UFAI?
...has finally been published.
Contents:
The issue consists of responses to Chalmers (2010). Future volumes will contain additional articles from Shulman & Bostrom, Igor Aleksander, Richard Brown, Ray Kurzweil, Pamela McCorduck, Chris Nunn, Arkady Plotnitsky, Jesse Prinz, Susan Schneider, Murray Shanahan, Burt Voorhees, and a response from Chalmers.
McDermott's chapter should be supplemented with this, which he says he didn't have space for in his JCS article.