The war with Tizen only get started. Yet, it's funny how those two OS will end up being almost 100% compatible (at least for webapps), and so in the end, it won't really matter which one you'll be using.
Maybe this will start a new trend of "web phones", and will push android towards becoming more of a "chrome os".
This "war" you speak of is between two mobile OSes making up literally a small fraction of one percent of all mobile users.
BlackBerry OS and Windows Phone, which are nearly irrelevant compared to Android and iOS, are absolutely huge compared to Firefox OS, Tizen, and the other mobile OSes.
Firefox OS and Tizen will have absolutely no impact on Android.
I know it's not going to matter this year, and probably not next year either. But the fact that it's going to be extremely easy to develop on those platform, plus the fact that it's probably also be a lot easier to deploy your apps (than on Apple store) probably means that those OSes will gain a lot of traction.
There's also the theory that Samsung will probably want to stop being dependent on Google, and use its own OS. That could be a game changer.
I think Chrome OS will have a big impact on Android, though. It seems like such a silly business model for Google to push web apps on their netbook platform but put forth Java first on mobile. I imagine Android 5 will probably have default-Chrome and at least put its app store next to play and try to push developers that way.
Google has enough cash to invest into both native and web platforms, and see which one (if any) prevails. At the end of the day, more platforms is access to more developers and the apps they make, which in turn is more incentive for end users to buy the devices, whatever OS they happen to run.
Mozilla is leveraging a large existing developer base and relying on the brand power and capabilities of Firefox that they have full control over. Their choice of market is interesting too, as it seems to be largely served by low-cost hardware stuck with outdated Android installs with no upgrade paths on the horizon. Meanwhile, Google is distancing itself from Android as a product and instead pushing own devices as "the" Android experience, leaving the low-cost hardware market with stale software.
These seem like thought-out strategic moves Mozilla is capable of pulling. It'll be interesting to see how things play out.
