What will happen if crypto vanishes overnight or due to some or the other reason if crypto becomes inaccessible to public? I know this does not make sense as crypto will not vanish but still what if it happens? What about those huge chunk of investments made by whales and other investors?
Those huge investments would become instantly worthless. But you said it yourself, this scenario makes no sense. Crypto could be banned or the internet could be cut off, or it could end up being a passing fad. At no point would it simply
vanish though.
Even if the internet went down worldwide, the blockchains would still exist, waiting to be mined once the network returns.
Given how many cryptos are there and how many company are behind those cryptos, it is really impossible for it to vanish in a sudden. Cryptos are facing issues in different countries which is proven by some countries who are not yet adapting such technology. They are having issues with it in which we cannot blame but it would be absurd to think that this would be the reason for such thing also being given that there are countries where cryptos are widely being used.