I agree there's already a significant proxy risk with Mozilla (though Mozilla does consider many Google web proposals harmful today), but that is also no less true today, and in fact, today that means Google holds two votes not one.

I would again agree Microsoft and Apple will heavily endorse their own interests, Microsoft much more so in terms of enterprise requirements and Apple much more so in terms of privacy-concerned consumers. The advertising firm influence will be significantly dimished and that is a darn shame.