it's hidden subtly. I think the point of the article is that the goal of SOPA was not to give the government the ability to censor sites, but to compel sites to censor themselves due to the threat of having their lives made difficult. And the title implies that this can be shown through an application of game theory.

See the front page (on Hacker News) where there is a story on uploading.to blocking visitors from the US.

Here in EU, a lot of sharing or aggregating sites are beginning to censor themselves or are closing doors completely (videobb, mixture video, allotvshow, ...).

Most of the US series I used to watch online (no legal alternative except waiting 1+ year for an overpriced DVD set) are disappearing since MU shutdown.