Hmm...your examples are dissimilar: Yahoo and Microsoft have very different challenges than Blackberry or Nokia (they're in a much better position), and I'd put

Hmm...your examples are dissimilar: Yahoo and Microsoft have very different challenges than Blackberry or Nokia (they're in a much better position), and I'd put Zynga in a third category. That said: some notorious companies have executed big turnarounds from near-death to leading. The most notorious is of course Apple :) . In the tech sector we've witnessed the reinvention of IBM (from mainframes to services), mostly copied by HP. Some articles: http://www.marketwatch.com/story/americas-ten-biggest-corporate-turnarounds-2011-02-03 http://www.marketwatch.com/story/americas-ten-biggest-corpor... http://www.businessweek.com/smallbiz/turnaround/ http://www.businessweek.com/smallbiz/turnaround/