Well, the gorillas chose to come to a table and open a discussion. These decisions might as well be made in closed rooms at Google and Mozilla, and there would

Well, the gorillas chose to come to a table and open a discussion. These decisions might as well be made in closed rooms at Google and Mozilla, and there wouldn't be much you could do about it. By the power of browser market share, they could just skip W3C and implement whatever they want. What they'd get away with is only limited by the point where someone with a different agenda starts funding their own browser fork (and can convince users to use it.)