It really doesn't matter what a communist country does. Everybody knows that China has an extremely restrictive government. The bans in China were more to protect their control over their population, rather than actual concerns about energy or price manipulation. I doubt many more countries will follow suit, and certainly none of the G20 countries will as they tend to value freedom of choice, regardless of the cost.
Agreed but in terms of trading volume this kind of news is always a shame (if it's true that is).