Dont get Pushing Buttons delivered to your inbox? Sign up here n August 2009, at the very first Gamescom expo, I sat in a small meeting room in Germany and played Mario Kart and World of Warcraft on a laptop, via technology that was then completely new: cloud gaming. It was a demonstration for a yet to be launched service called Gaikai that promised to let you play any game in a browser window, without a console. Here is an ancient video of that demonstration, featuring a very young Keza. With...