Cryptocurrency has entered our lives now. This is very difficult to change. All internet must be disconnected for Bitcoin to disappear. What's the purpose of Bitcoin? It is the transfer of value from one place to another. He already does that. I don't think it's gonna disappear.
While the disappearance of the Internet may seem like the only way to stop cryptocurrencies at the moment we should not underestimate the governments, they have all the resources in the world and if they want they can hire the brightest minds to try to stop cryptocurrencies without shutting down the Internet, so it is important to not be that cocky and think that cryptocurrencies are invulnerable because we do not really know if they are.
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
I was just giving the official numbers, however you are right, this market is way smaller than that figure, which leads me to think what it is the real size of this market?