Ultrabook, a very competitive new force in the notebook market, accounted for only 20 percent of mobile computer sales in 2011, down from an expected 30 percent  One supplier said sales of Ultrabooks had suffered in large part because there was too little demand in Europe
According to the survey, European consumers generally prefer laptops of 15 inches or more, with data showing that between 40% and 45% of all mobile computers sold in Europe are 15 inches, and ultrabook does not have such size at all
Ultrabook should have designed and produced 15-inch products.