there are a few things but they lead to the same situation

increased diff by some big miners, instead of increased diff by more people with smaller mining rigs put more btc into less hands.. what does that do?  same thing that the miner makers are dealing with.  A few big players with piles of btc trying to beat the other guy in grabbing what ever bids are out there buying btc...

if the btc are spread around smaller piles to more people it would take a pure panic to get everyone to go sell at once..  here you have the prisoner's dilemma...  it would be best if both prisoner's don't fess up and the cops have nothing, but usually one will fess up first since they don't know for sure if the other guy will keep quiet.

If the big miners and miner makers all took their time in a slow sell, then it would be best to all..  but since they cant really trust each other they do what they know is good for them right now.. and that is sell as fast as they can

so enjoy the low btc price until probably next spring when it evens out..   then you got the Winklefools that are going to dump their pile in an ETF that will bring bad publicity.   rough times for BTC next 8 months