I believe it's possible, they have already tried putting all kinds of apps on their devices that are meant to replace Google functionality. Some of it worked,

I believe it's possible, they have already tried putting all kinds of apps on their devices that are meant to replace Google functionality. Some of it worked, some or even most of it didn't. One thing that we should keep in mind is that some US based services do not work nearly as good in other languages as they do in English. For example Google Now didn't work as well in German as it did in English for a very long time. Maybe it's still like this to this day. (didn't try it anymore for some time) So I can absolutely imagine that currently Google Now in Korean/Chinese is worse than Siri/Google Now was in its first iteration in English. For us in the West their apps might look bad and unusable, but to people in Asia our apps might look equally bad and unusable.