Allegedly, Samsung is pursuing tizen as a browser based os for their devices[1]. This seems accelerated after the Motorola mobile acquisition. I'm guessing they are looking at that as a technology to incorporate or a hedge.
I can imagine that If Samsung continues to develop a browser based OS they will likely do it in a way that inter-operates with the Firefox OS ecosystem. By the time this would come to market there will likely be more apps in the Firefox OS marketplace. It would solve the problem of new platforms having a limited selection of apps.
[1] http://m.cnet.com/news/samsung-to-release-high-end-tizen-sma...