everyone has his own opinion, so I believe there are many forces that are fighting for dominance over bitcoins that are partly trying to push prices down and some pushing it.
I think Because it is not tied to normal economic conditions like fiat currency, I do not quite see where the origin of the prediction is. The fact that many economies speak of some kind of oversight does indicate that acceptance is increasing and may be a more stable, and higher, price mark.
I'm reading the Speculation section of the Economic forum yesterday, and two people from the BTC Foundation say that 2018 will be the last time that Bitcoin will be under $ 10,000. I believe that this statement is made to alleviate the concerns that arise every time the BTC falls. I do not know how anyone can make that statement with full conviction, because the nature of altcoin is very volatile.