I don't agree with Steven Strongin's view that cryptocurrencies are not surviving in the long run. We've seen cryptocurrencies through thick and thin for some years now. Falling down several times but they always come back up. Yes, the prices might drop completely in the future, but they will always be back still.. whether in a short time or in some months. People should thus not invest more than what they are willing to lose in a long period. Because the prices might take a very long time to get back up.
And still if it means not surviving in the future, then not all will not survive. We shall have a percentage of cryptocurrencies that will make it through, probably 10%.