It was a clear indication that even a competent manager like Jamie Dimon has trouble managing a modern mega bank.

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The livedoor-Fuji battle, the Yumeshin bid and the mega-bank sumo-wrestling match illustrate three important developments.

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Germany Chancellor Angela Merkel (No. 4) and Australian mega-bank Westpac CEO, Gail Kelly (No. 8), reflect a growing global distribution of power.

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Emergency measures will obviously be at a different scale when talking about a mega-bank, a community institution, or a local restaurant, but all companies need to consider the risks of a major event to their operations.

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Now 37, Oliver drops in on his half-brother a few times a year while scouring the globe for mega finance deals on which he can give advice as joint global head of UBS Investment Bank's Financial Institutions Group.

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