Chinese have entered the game on time and now they are playing very important role. They figured out all advantages, want to have as much profit and influence they can and I'm not sure there is any mechanism that would take away Chinese from Bitcoin. In the upcoming months and years we could witness the fight for dominant position in Bitcoin market.
Chinese have always been controlling the bitcoin in a way, since they have a really big share of the mining power of the bitcoin since electricity is cheap that makes perfect sense, it is true that they don’t really control it but they control the price even if it is decentralized, and the only way that is going to change if bitcoin mining starts becoming easier to do so requires less electricity and less set up costs, I believe that never will happen.
Trend will change either for their own regulations or due to higher prices so more miners from rest of world.
But bitcoin mining works in different way. Higher prices will get compensated by new increased mining difficulty. So, I am not seeing any big competition from rest of world any time soon.