If the rest-of-the-world can get its head out of its ass, a fork of AOSP with an open governance and a commitment to opensource and open platform, so that every one benefits from it. You wouldn't need that much from each country to get more resources on that AOSP-bis than Google will ever be able to pour on its homebrew version. You make a rule that public service can only buy devices using AOSP-bis based systems (or even better: states choose their own AOSP distros) and quickly, Google has no choice but to follow your version, not the other way around.