At Starbucks Mr Schultz replaced Jim Donald, and promptly changed the firm's strategy but the rapid expansion that got Starbucks into trouble was Mr Schultz's strategy as much as Mr Donald's, says Jeff Sonnenfeld of the Yale School of Management.

ECONOMIST: Second-act chief executives

Indeed, it is said that Mr Donald was in Mr Schultz's office twice a day to check he was doing the right thing.

ECONOMIST: Second-act chief executives

Schultz hired Donald to run Starbucks' North American operations in 2002, with the understanding that the job would be a tryout for the chief executive position.

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Donald was similarly aggressive at Starbucks, where he rolled out an average six stores a day until Schultz kicked him out in 2008.

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