While scrolling on coinmarketcap, I've seen this post of watcher.guru that Bitcoin has a higher market capitalization compared to the three biggest banks in the world, even combining them all.
I don't care about ranks of Bitcoin and three biggest banks especially banks but through your thread, I would like to say one thing.
These banks have longer histories than Bitcoin, they are all centralized, while Bitcoin is decentralized and no government, no founder, no core team developers control Bitcoin protocol. No terminate button to freeze any Bitcoin wallet or address like with commercial banks, your account always has risk to be terminated, fund can be frozen.
Similar risk with centralized cryptocurrency exchanges.