It is true that all is possible and we have to be ready whatever happens. But, in my opinion, it is highly unlikely to go down to $2k price per BTC. $6k is the approximate mining cost and miners needed to pay for the expenses. They will not sell anything below $6k, which will likely be the cause for scarcity on BTC, therefore, institutional buyers will most likely buy at that price level and we may have another bull run.