That is really doubtful, a market of 200 billion may sound like a lot for people like us but when it comes to the economy that is not really a lot of money, this market is still very small and the only ones that will be greatly affected by it will be people like us, even if we are not holding a lot of bitcoin that bitcoin is probably a significant part of our portfolios, and even if the whales will lose a lot more money than us many of them have cashed out part of their bitcoin and they will be fine if the market of cryptocurrencies crashed
This market is way smaller than 200 billion (dollars)
In fact, any market is smaller than the reported number as this number is mostly an illusion (or mathematical abstraction of sorts if you please). For example, the gold market is said to be over 7 trillion dollars, but if everyone decided to sell their gold and liquidate, they wouldn't be able to get even half of that money
But with cryptocurrencies it is way worse than that, so I'm not sure you would be able to get even 20 billion dollars out of this market if all crypto were to be sold out completely. The point is, there is little to no real use in cryptocurrencies (unlike gold) which would prop up the prices at a certain level, so when everyone sells out, the price goes to zero