Epic's tech guru Tim Sweeney had an interesting speech at D.I.C.E. 2012. He talked about the future of gaming with emphasis on visual computing. As one future of gaming he mentioned cloud gaming, OnLive and Gaikai.
Though he has his own style of talking as you will see, it is very interesting listening to Tim Sweeney. If you want to skip to the OnLive part, it starts around the 20:30 mark.