That being said, I wonder if games might be prepped for disruption. A big part of any polished game is user testing. How do we know its fun? We watch people play and see if they have fun.
Well, with the advances made in web analytics and the possibilities that graphics acceleration offers in modern (or maybe future) browsers, I could see studios and publishers selling games around a more iterative process.
An approach that finds the minimum fun experience and iterates from there could work very well on the web. Games like Asteroids and Missile Command do not need the polish others describe to be engaging, and then hosts of new features can be added over time to make such games more engaging. Add in the fact that web-based business models for games have proven recurring revenue through micro transactions can be very viable, and I think there could be a lean approach to game development.