I agree no one can turn off bitcoin now especially now that there are countries that have legalized bitcoin. This is one of the shocking news for the development of bitcoin so for now I don't think there is a loophole to shut down bitcoin.
all rich people want to save their assets in bitcoin so to turn off bitcoin I don't think it will happen now even like you said there are countries that legalize bitcoin so this is one proof that bitcoin is very appropriate for assets in the future.