You are worrying too much buddy. If China does go through with the ban, the mining companies like Bitmain etc won't just shut shop, but would relocate to other countries where they can continue their operations smoothly in a legal manner.
Agree, China is only worried since we all know that China doesn't want their money to be sent out their country which blockchain/crypto did thru mining, one of the main reasons why they are shutting down mining in their country. So, most likely the option is for other mining companies to move to other countries where it is legal with cheap energy cost.