It depends on what common apps are available. Only option I see for Huawei to get those is by leveraging the Chinese market to incentivize devs to make a google free version of their apps. This way they should have enough critical mass to make a port worth it. Offering a version of those internationally should be just a small additional step. This obviously would require ruling party of China to open up their user base to outside companies. But they would still have a lot of control through the app store, and if established successful this control could even extend beyond their borders. I wonder if there is a way for Huawei to actually get politicians on board with something like that...