With more and more people owning a mobile device (tablet or smartphone), people often doubt the future of gaming in the browser. More specifically, the future of flash and browser based Unity. Both of these have development tools for creating apps. The big idea is that entertainment will shift more and more to mobile, and that the laptop and desktop will only be used for serious things such as work. Therefore, developers will focus more and more on mobile and not make web games anymore. This might be true in the long term (think 10 or 15 years). But for now, it makes a lot of sense to keep developing games for web as well. They can be used to build up an audience quickly, to try out new ideas, and to promote apps. The latter reason will become more and more important, in my opinion!