I kinda agree that Ethereum will be worth $1,000 in a couple of years, but I also believe that a lot of other alt coins will rise significantly as well such as NEO since probably 99% of the population hasn't ever really heard of cryptocurrency yet and when it does hit mainstream a lot of the alt coins will skyrocket.
And another important reason the ethereum will try to move to the pos, that gives enough reason for ethereum worth a lot in the future. I can say that the aragon's co-founder will be true in the future. I just hold my ethereum right now. That makes sense at all.