Sony may have brought us the Walkman, but Apple has been dominating portable music players in recent years with the iPod. With the release of the iPhone and iPod Touch, Apple is pushing further into Sony's territory with mobile gaming. Apple's AppStore has even started to attract major game developers.
The PlayStation Portable (PSP) has sold over 50 million units in the last four years, but Apple is quickly catching up, with 40 million video-game-capable units sold in only two years. According to the Nikkei Business Daily, Sony intends to compete directly with Apple's iPhone with its own mobile phone.