IF the whole world ban BTC at first BTC will Crash very hard but only for a few month, Demand will be increased while there will be no Legal Seller, All trade will go to undergrand and Black market and illegal traffic, sellers will start to selling BTC 50 X more than current price. BTC will be more expensive, As simple as that,
That was an answer for these who said BTC will die if whole world Ban it, So no BTC never Die.
If Bitcoin is banned for use in all countries, the demand for it will definitely fall sharply because most people will want to get rid of it. And even this is not about the law-abiding majority, although this is true, but about the fact that people will simply be afraid that it will become useless. It does not even need to be banned by all states. Enough and that it was banned by the "Big Twenty." Further events will be related to whether the ban concerned the entire decentralized cryptocurrency, or only bitcoin. If the ban applies to the entire decentralized cryptocurrency, it will be used by a limited circle of people for illegal trading. Most likely, people will switch to the use of stable coins of various states.