I've been telling people around the forum for many months already that the Chinese miners have over 90% of hashing power under their control, but most people were refusing to accept this truth. Given the nature of the political regime in Beijing, it is the Chinese authorities who are essentially controlling Bitcoin mining through the miners, not the miners themselves.
I am aware that there is a sort of mining cartel going on in Bitcoin, but I was not aware that the Chinese authorities are directly controlling the Bitcoin miners. It would be nice if you explain a bit more why you think this and if this is really a fact or just your theory.
Now that Donald Trump, the president-elect of the US, is going to impose hefty tariffs on the Chinese exports, could the Chinese government retaliate with, for example, through exerting their control over Chinese miners? What immediately comes to mind is the rejection of all or most Bitcoin transactions that stem from the US...
So how likely is this, and what are the remedies, if any?
That is not very likely. I think most of us here in the community are overestimating how the authorities view the importance of Bitcoin. I believe they do not really think much about it and they tend to keep the topic at arms length because it could be that they do not really care.