I was reading the Speculation section from the Economics forum yesterday, and two guys from the BTC Foundation said that 2018 will be the last time that Bitcoin will be under $10,000. I believe that this statement was made to lessen the worry that comes about every time that BTC drops. I don't know how anyone could make that statement in full faith though, as the nature of altcoins is its very volatility. Since it is not tied to normal economic conditions as fiat currency is, I don't quite see where that prediction comes from. The fact that many economies are talking about some type of oversight does show that acceptance is gaining and perhaps is a harbinger of more stable, and higher, prices.
Well that is why it is a speculation, no one knows exactly what it is going to happen, we are doing our best analysis that we can but that is not enough, which is why most of the predictions that you are going to read in this forum are mistaken, however even if we cannot make accurate predictions that does not mean we cannot make some general predictions that will most likely become true, like for example that in the next decade the value of bitcoin will be many times bigger than its current value.