If you compare it to a stock, it is pure speculation. However, it has as much intrinsic value as the dollar. The idea of cryptocurrency in 2011 was a non-government currency that could be verified, but not tracked. People began pure speculation. Instead of using Bitcoin to purchase and exchange, people purchased Bitcoin solely as a form of gambling. Governments cannot control Bitcoin, but they can control exchanges used to acquire and sell cryptos. I haven't read news stories today, but I believe a lot of the crypto pullback today is related to China cracking down on exchanges.
Cryptocurrencies have no value unless people are willing to purchase or exchange for it. It isn't a public company with a market cap. I even disagree with labeling the value of cryptos as a market cap. We don't list a market cap for the US Dollar or the Euro. If people were using Bitcoin as currency instead of speculation, it would not have risen anywhere near as quickly. Also, it is using almost 1% of all of the electricity used in the world to encrypt the transactions in the register. If actual transactional usage of Bitcoin becomes normal, I don't see that it will be able to keep up. It could possibly get to 10 or 20% of all of the world's electricity in a few years. I could be totally wrong, but I do not see Bitcoin as being able to take over as the currency of the world, so it's actual value is zero.