If at all is not profitable to hold, you still have to hold because the price fall has strictly affect everything attached to it. For instance someone that bought as at the price is around $10,000 will the person sold now that is $6400. Of course they can not sell. They still have to hold and wait till the price get to the purchase price or higher. That is when they can ascertain their profit margin
There are always two ways to it. It is either you are a trader and you can take advantage of the fluctuations in the market, or you are just simply an investor without any form of trading knowledge and you are stuck with is to just hold.
It is one thing for the market to be profitable in the short term or not, but I expect that only those who are into short term trading should be focused on the short term and those who simply cannot trade should just hold on and focus on the long term.
People have tried to trade, sell at loss, and even ended up regretting it because they had no idea when to even be buying back, or possibly get back if the market picks up after selling and that leads them to trading with no strategy, which is gambling as far as I am concerned. So in that case, it is better to hold than to gamble.