If this happens, then I invest in another crypto currency, which then to some extent compensates for the loss, while I still retain the chances that I will make a profit from the loss.
I think you don’t have to wait for such a situation, which will make you give up bad assets, and Start doing other, more promising. Already today you should analyze all your assets and choose more promising ones in order to be able to correctly respond to all attacks of the cryptocurrency market.