Unfortunately Mozilla is intent on squandering every last advantage they still had by copying what Chrome does.

They abandoned XULRunner and Gecko as independent platforms. They're committing to breaking every traditional extension every 6 weeks with the new release cycle (and told institutional users to go fuck themselves). The new stable extension APIs will be limited just like Chrome.

Companies will just switch to modern IE, Iceweasel, or Safari to get a maintained shelf-stable browser. Everyone else will use Chrome.