Prices go up and down, is a thing that often happens in trading. because all market conditions are determined by supply and demand. so why should we panic ?. for a businessman like A16z, Alameda, Three Arrows Capital, the price drop is a great opportunity for them to buy some of the coins they like.
Such funds usually know what they are doing and they will not spend such amounts just like that, in any case, this is a good sign for the market if large funds are interested in such purchases.Usually small traders cause more panic than there really is, each fall is the same thing.
The difference is that, when you have 500 dollars income per month, and you have 3k dollars saved aside, that 3k dropping to 2k or even less, like under 1.5k, becomes a problem and something you are scared of. It is 6 months worth of salary becoming less than 3 months worth of salary. You may not "need" it now, but what happens tomorrow if you are out of work?
The more it worths means the more you can survive until you find another job. Compared to us, these rich people have millions of dollars on their bank account anyway, they will not really need money ever again, they have enough cash, and the rest goes to investments which could drop 50% and not be a problem for them, they could buy 10x more and drop that average down and be richer, they can do it because they have the money to do it, and they do not need that money anytime soon, probably ever.