Interesting read. Basically, they chose design over engineering due to the ugliness and bulkiness of the original Xbox.
http://www.forbes.com/sites/trangho/2016/05/01/how-to-profit-from-expected-surge-in-video-game-addiction/#429ee0d337f6
http://www.forbes.com/sites/trangho/2016/05/01/how-to-profit-from-expected-surge-in-video-game-addiction/#429ee0d337f6