It will come down or won't come down will be because of Tether.  Every time Bitcoin goes up it has something to do with Tether.  There is a conspiracy theory out there that when BTC goes up so does the Tether supply.  It is hard to prove these theories because of how secretive Tether is.  As BTC gets more mass adoption Tether will slowly stop to matter.  The case could be made this theory was true in the past but now BTC has gotten so big Tether is only a small player now.