Yes, PS2 did grow a lot mostly in Europe party due to the big success there of Sony casual games, stuff like Singstar, EyeToy and Buzz aimed to new audiences, people who before didn't play videogames. Back then, casual games were starting to be popular with browser games and mobile games.
Nintendo took note of that for Wii and their casual DS games, and MS also tried it with Kinect.
Regarding emerging countries there's India too. Like China (or some other Asian countries like South Korea or Indonesia) or LATAM they are small market for consoles but big for mobile. As of now, one of the goals for SIE is to grow in Asia -specially China and India- and LATAM. They also are expanding to PC and mobile because they know that most people in these countries normally play only on mobile or PC and won't buy a expensive console.