Bitcoin will have a market cap of 1trillion and a value of 100k. It will be considered as another option by people looking to store some value. The one trillion will come from a majority of gold lovers switching sides understanding btc is a new generations gold.
Eth for me could go two ways. It could be the google of tomorrow hosting tons of amazing applications that may become the corporations of tommorow, or it could get absolutely decimated by the SEC who could blame them for all of the ICO scams taken place on top of their platform (take this view with a pinch of salt, this is the very worst case scenario for Eth)
This is very probable as Vitalik is a determined individual and not prone to make the same mistakes the bitcoin developers have done with Satoshi's dream for it's use on the blockchain.
Just look at the new documentary that will be coming out soon. Since they just released the trailer for it yesterday on 4.20 it will probably show on tv soon!
https://youtu.be/eSPaNVYEWn8Here is a quote from what is discussed into the probing of the inventor of ethereum's life.
Enjoy!

"Bitcoins emergence as a global digital currency has been as revolutionary as it has been erratic. But while fledgling investors obsess over every fluctuation in the cryptocurrency market, nation states are more interested in the underlying blockchain technology and its ability to revolutionize how business is done on the internet and beyond.
VICE's Michael Moynihan travels to Russia with Vitalik Buterin, inventor of the Ethereum blockchain, to get a front row seat to the geopolitical tug of war over Internet 3.0."