[BrendanEich]

The problem is that Firefox can't implement these APIs without OS support, and OSes don't have the same kind and number of such APIs. We are working on better cross-mobile-OS Firefox, but it cannot be our only bet.

What's more, Firefox is locked out of many mobile OSes (I do not mean iOS in particular), but the commoditizing hardware can support a fully open OS and web-based "home" and open web apps environment.

The increasing vertical lock-in and tying among all OS vendors (Android included) and the at best half-open- / delayed-open-source status (ChromeOS excluded, bless it -- but it won't support other browsers than Chrome) are problems for Firefox.