Kinect for Xbox One

The Kinect for Xbox One was Microsoft's forced 2013 motion camera, bundled into every launch console at a $499 price point—$100 more than the PS4—saddling users with a peripheral nobody wanted. Its voice commands failed 25% of the time in quiet rooms, the game library comprised just 12 titles, and Microsoft lost the generation to Sony's console. This blunder is far more damaging than #4 Sega Activator, which at least cost only $80, not the price of a whole system.