Multiple consoles aren't required for innovation- I don't know where anyone got that idea. The NES had some of the best videogames ever on it and it was pretty much a monopole. The GameBoy holds 99% of the handheld market and there's a plethora of amazing games for it. There's 3 home consoles now, more than there's ever been this long, and a lot of people will tell you innovation is slipping. Truth be told, if there was one standardized console, the competition that would foster innovation would be between the developers themselves. They'd constantly have to compete with their fellow developers of the same genre for who has the best one, and hence which one sells better. 3 consoles has actually inhibitted innovation this generation. Since Sony and Microsoft barely release any games, much less original and innovative ones, 3rd parties have barely anyone to compete with. Since 3rd-parties don't get good sales on the Gamecube due to the fact any smart Gamecube owner would buy Nintendo's superb titles over a crappy 3rd-party game (these superb 1st-party titles don't exist as much on the PS2 and XBox leaving a bigger market for 3rd-parties), 3rd-parties flock to the PS2 and XBox. It's easier to sell a bad game to a bunch of people who don't know the difference, or more likely have no choice, than to people who do know the difference and do have a choice. And since there's 2 more consoles on which crappy 3rd-parties can release their crappy games, they're more spread out and don't compete with eachother as much. A version of your game already on the PS2? Release it on the XBox and get just as good sales. If there was one standardized console, at the most two, all the crappy 3rd and 1st-parties would be stuck with all the good 3rd and 1st-parties and force to innovate in order to stay in the game. Nintendo and Sega benefited heavily from competition during the SNES/Genesis generation and their quality shows, but when 3rd-parties find they can't compete with such quality, they flock to a place where that quality doesn't exist.