That's a pretty bold assumption. Maybe you have already read the political landscape of 10 years in the future, but to say that China already 'owns' Taiwan, especially comparing it to Hong Kong, which is only superficially similar, takes some big cojones. Like, Unbelievably big. I wouldn't make such bold statements without backing them with real facts, because at face value they seem a bit ridiculous.
Absurd. This has nothing to do with what I like or not. The facts are that Taiwan is not Hong Kong, Taiwan is a separate country who's future may or may not involve becoming part of China and that Foxconn is a Taiwanese and not Chinese company.
You don't have to like it, but the answer is: the same country that now owns Hong Kong.
Foxconn is a Chinese company. It's why they're given special privileges that no foreign company can ever get, when it comes to everything from trade protections to labor regulations.