What Happened to Piracy?

Idly looking at Blogger stats, I see one of the most popular posts was one from 2008 suggesting a convoy system to deal with piracy.  Seven years later piracy seems to be a non-issue, at least in terms of media discussions. (The wikipedia article has a paragraph headed "Collapse of Piracy in 2013".  I wonder what happened--Tom Hanks made a movie, Captain Phillips, and that scared all the pirates into law-abiding citizens.  Or Somalia gradually got more orderly?  Or something else? (The wikipedia article suggests a mixture of measures, including effective government.)