Stallman apparently believes that all intelligent people are also ethical and altruistic. We can fill in the bad ending for ourselves. Although, to be fair about it, since practically everyone will catch the superintelligence virus, things would probably even out pretty shortly. Let's just hope nobody with suicidal depression and a mean desire to make others feel as bad as they do has their intelligence increased to the point where they can build a depression-vibe broadcaster, or some other destroy-the-Earth machinery.