ETH to 25k by 2020 seems quite absurd at this point. Even BTC hasn't reached that price and it is far superior with a far lower supply. I will be selling a large portion of my ETH if it reaches $1500.
I agree with you, it seems to be very difficult for ethereum to reach that price. Although there is nothing impossible in the crypto world, you can consider it. Most people will certainly hinder the growth of prices and make it difficult to reach tens of thousands of dollars.