From gamespot.com:

According to a survey by the industry research group [NPD] spanning three months, 75 percent of consumers 13 and older did not download digital content on any platform at all. Some 15 percent downloaded content via a PC or Mac, 4 percent through a smartphone, and 2 percent connected via a Blu-ray Disc player or a digital video player, such as Apple TV or Roku. (The sample size of the study was not provided.)

The remaining 6 percent downloaded content via a connected "game player," a category that covers the Xbox 360, PlayStation 3, and Wii.
Full Story: gamespot.com