If many countries are banned, there could be a great demand through DeepWeb, where anonymity is more guaranteed but requires much more risk. Demand increases when Bitcoins are lost, that is, if there are people who lose their private keys or something happens and / or demand will always be given as they eliminate the offer at low prices.

Bitcoin will not die if countries around the world are banned, ways will always be created to obtain Bitcoins even illegally (against the policies of countries that forbid it) although I think it might not be possible, they cannot go against the flow.

The current trend is to attack Stablecoins, they believe that their local economies may be threatened, Bitcoin represents a refuge from any catastrophe of a global nature or a global economy crash, such as the one that occurred in 2008, which was actually a total disaster.