Even if Chinese companies did control Bitcoin, what is the point?
They can't derive unnatural profits - Any attempt to do so would only devalue Bitcoin and the possibility of making profits.
Well it is good that someone is controlling and China is not the one who controls bitcoin, but us the users and as well as the developers.
I believe that even China is controlling bitcoin it doesn't mean that they are the one who can do whatever they want with the price increase or decrease with bitcoin.