https://www.technologyreview.com/s/540921/the-looming-problem-that-could-kill-bitcoin/

This was over 2 years ago.  Those that ran the price up over the last $9000 probably have no idea about these issues.  With things the way they are they will find out...and that's when the panic selling will begin.  This is not FUD...it's FACT.  Everyone was warned by the top dev...and nothing was done.  Now is a good time for everyone to look into futures and options to hedge their bets if they cannot sell.