Firefox OS is a nice idea, but it’s predicated on open standards: Anyone can take Firefox OS’s additions to HTML5 and produce their own implementation. If developers get on board — at least one Mozilla bigwig has stated that they “want to attract hundreds of thousands of developers” — and lots of open web apps begin to appear, then Google can simply implement the same specification in Chrome, Microsoft can implement it in IE10, and Apple can implement it in Safari. Even if you’re worried about the commercial interests of Apple or Google — or if you’re a carrier trying to extricate yourself — there’s nothing stopping you from installing the Android Open Source Project on your phone.
I think this is where the author contradicts his own argument. Do you know how many small businesses can be created on an open platform such as Firefox OS? It let's individuals and small development teams compete directly against Apple, Google, Facebook, Microsoft, etc. It truly levels the playing field, in my view. Or at least, that's what I hope Firefox OS will be capable of.
As a developer and designer, I (for one) can't wait to try out Firefox OS. If it works well, I'll start using it more. And by all indications I've seen, it will probably work pretty well :)