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/Others have made similar predictions and some even predict that the price of Bitcoin will rise to $250,000 in the next 3 years. I think we will eventually see the price rise to over $100,000 but I am a little more conservative about the time frame. I think it could take several years but I do think it will eventually get that high.
I also think that many of the altcoins will do well also because of the various functions of theses different altcoins and the amount of money going into all these coins.