I doubt it will disappear, Bitcoin is on its tenth year and we have a majority of responsible users who knows how to take care of their wallet, and newbies are not lacked tutorials on how to protect their coins and their private key, there are so many articles about it online and so many youtube videos as well.
right what you convey crypto or bitcoin currency is growing or missing it depends on the government and the investor itself so if the investor doesn't trade bitcoin again and the government forbids it hard maybe also b itcoin will disappear