Summary Box: Why iPad dominates

ADVANTAGE IPAD: Apple is able to dominate the tablet market in part because of the advantageous deals it cuts with components manufacturers. It helps that it makes tens of millions of iPads and shares components with the highly popular iPhone.

TOUGH FOR RIVALS: Any company that wants to make a tablet computer that matches the iPad’s $499 starting price has to endure higher costs.

THE NUMBERS: With the new iPad, Apple is expected to extend its 62 percent market share in the tablet computer category it created. IMS Research expects Apple to capture 70 percent of the market this year.