Nintendo created the group, Sony took them and expanded the popularity thus expanding the amount of gamers with multiplats and then Microsoft divided Sony's share after two generations of dominance. It should be common sense by now that multiplat gamers are "Swing gamers".
Ive said it time and time again that the mass majority of gamers like third party games the convenience and price of console and have zero loyalty to any brand. They want their COD, GTA, Madden and Asssassins Creed. The only brand that has ignored this fact for years is Nintendo because of how they treated third parties back in the day.
Those swing gamers that you speak of are really a part of Sonys old marketshare that they expanded during the PS2 era. Sony got them hungry off of multiplats just like Nintendo did previously. Microsoft hasnt expanded anything since they joined though (roughly 24 million consoles sold their first gen), they are just taking from Sony's share.
