Actually, it does happen around here, in like half of Europe, the northwestern part mostly.
Sometimes is just the advantage of a multi-party system or just the fact that some party leaders know when they screwed up and they do have the honor of taking the steps needed. Ignoring the Netherlands which with 20+ parties is in a class of its own and looking even at more traditional parties there are a lot of examples, David Cameron is one, he called a referendum he fucked up, he admitted defeat, and he put a stop to his political carrier for good.
China on the other hand is special, one party, one ruler, the system can't show weakness the whole communist propaganda relies on all as one stuff, so even if something happens it's the fault of everyone. The US is another case, just now democrats blame the loss of Virginia on Trump...everyone is at fault but them.
But leaving politics aside, there is no way they would change this even without the political implication, they're now focusing on the recovery of key sectors, they need to put back online at maximum capacity things that can help them in an economical war, and while semiconductors and other electronic parts manufacturing, steel, batteries, plastic products can be used as a tool, bitcoin mining can't. When half of the total annual mining reward is worth the same as their Christmas decoration industry, it's pretty easy to understand why they will never consider an unban.