Dont ever underestimate the power of greed. Those who bought and are holding at ranges 13-20k had the mindset of selling to recoup or even break even once price reaches those price points again. i have a feeling many of these peoples mindset will revert back to their pre purchase mentality. Hop on board and hodl as the eco system has changed and more belief in btc has come into fruition.
Those who bought in the ranges of 13k and above must have sold their bitcoins in loss. There might be very few people who have such a holding power and a mental strength to hold the coins for over a year and still not panic seeing bitcoin moving down to 3000$.