I don't think the FAI / UFAI distinction is particularly helpful in this case. That framework implies that this is a property of the machine itself. Here we are talking about the widespread release of a machine with a programmable utility function. Its effects will depend on the nature and structure society in which it is released into (and the utility functions that are used with it) - rather than being solely attributes of the machine itself.
If you are dealing with a secretive monopolist, nobody on the outside is going to know what kind of machine they have built. The fact that they are a secretive monopolist doesn't bode well, though. Failing to share is surely one of the most reliable ways to signal that you don't have the interests of others at heart.
Industrial espionage or reverse engineering can't shut organisations down - but it may be able to liberate their technology for the benefit of everyone.
Its effects will depend on the society in which it is released into
So we estimate based on what we anticipate about the possible state of society.
The fact that they are a secretive monopolist doesn't bode well, though.
If it's expected that sharing AGI design results in everyone dying, not sharing it can't signal bad intentions.
...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.