There's an excellent article by Eric Decker in the September 5 issue of Small Business Times of Milwaukee and southern Wisconsin. It's an exceptionally detailed and insightful report on the consolidations, layoffs, and changes in the area's printing industry.
Two main points that stood out to me were that those printers that didn't invest in newer equipment are losing out. Also, there's the familiar refrain that a lot of printing business is going overseas, where government subsidies make it difficult for local printers to compete.
And of course, as newspapers suffer the consequences of more people getting their news online, printers suffer right along with them.