The only way it would be anything other than an epic fail would be if that $14.95 per month fee gave you access to every game in their library, anytime you chose, with no additional costs. If you are going to charge me for just the privilege of using your service, then charging me a premium whenever I want to use your service for what it is built for (actually playing a game, not just a demo), you will never EVER have me for a customer. And I can guarantee that sentiment will be virtually universal. Then if you factor in any connection issues and possible lag, downtimes, etc... There's not really much upside to this concept in cloud gaming.