I think it depends on bitcoin destiny. If bitcoin hard fork will success then ethereum will lost his price a lot. Because now ethereum price grows up so fast because of fear before bitcoin hard fork of some investors. My price is between 1,500-3,000$. When bitcoin price should be not less then 10,000$. I am very optimistic 
Some says bitcoin prices might goes up to 100.000 dollars. So are you sure that you're optimistic?
In 5 years, we'll be talking about the year, 2022, where bitcoin block halving will have taken place 2 years ago. We'll observe huge price movements.
cmon $100000 for 1 BTC?!?
I don´t believe there is such a huge market.
Ethereum in 2020 I could imagine around $1000.
As large as ETH could get with it already being priced over $200, I would think there are already a few ICOs that are better worth the investment.
Seeing how useful eth is i am not even surprised if the price would reach 1k. It served as starting grounds for other altcoins and so it it is farmore useful than btc itself. Btc is famous for its price and how many are investing in it but eth is a multipurpose project. A lot of people can make there own with the help of eth.