Falling prices and new business models will help U.S. e-book unit sales to grow from an estimated $313 million in 2009 to $2.7 billion in 2013, according to a new Yankee Group forecast. The research firm predicts e-book revenue will even outpace mobile app sales, expected to rise from $834 million to $1.6 billion over the same period in the U.S.
A separate Gartner forecast last week appeared more bullish, predicting mobile app sales worldwide will triple to $15.1 billion in 2011 from $5.2 billion last year.
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