"It is time to break up Google (GOOG)," writes Richard Sennett of the London School of Economics. "The problem is simple: the company is just too powerful, as are Apple (AAPL) and many other big tech groups." Sennett harks back to when the Supreme Court broke up Standard Oil in 1911, when "an overmighty business was shattered into 33 shards." He also cites the progressives of a century ago, such as Herbery Croly, who believed that successful start-ups would extinguish competition and become monopolies. Breaking them up "would set talent free."