As per the report written by max keiser of RT.com. He says, the bitcoin will increase to $100,000 and only top 20 coins will remain stable.
Keiser also blames bitcoin cash for misusing bitcoin name and it is just alt coin and doesn't hold for long time.
see report here
https://www.rt.com/business/410252-bitcoin-god-gift-keiser/$100k is possible but there is no guarantee when it will reach that point, if there will be something in future that can destroy bitcoin network than bitcoin can also be worthless.
20 coins or around 50 coins with high marketcap might only survive, I agree on that.
BItcoin cash is just another altcoin and its price is heavily manipulated by few supporters for quick profit.