If not for China, there's no room for growth in traditional markets anymore. Yeah, there's Africa, South East Asia, but Google and FB already are putting on big efforts there. So whether you like it or not, if you want a billion users right away, you have to make a compromise. Apple did it, why not Google?
I believe, with no hard evidence, that a 3 party system could solve most of the political problems facing the United States today. Because it would remove the incentives to be impossible to work with (although I feel this applies to one party more than the other, it definitely goes both ways).
As it is, we already have more than 3 parties (not sure what "official" means in this context, since you don't really have to register a party in US for it to meaningfully exist). The problem is Duverger's Law, which confines mainstream politics to the top two, and presents a near-insurmountable barrier for everybody else.
In US specifically, this would also require recognizing that parties are even a thing. There's nothing in the Constitution that says anything about parties, and federal elections don't elect parties - they elect individual representatives, who happen to be affiliated with some party (sometimes not even in any official way - much like e.g. Bernie Sanders is an independent senator, even though in practice he votes with Democrats most of the time).
And Xi is not a president, don't let their wording finesse fool you, they call the Korean War "Assisting NK against the US", to this day, vast majority of Chinese believe it was the US being the aggressor invading NK.