Let me be more specific and refer to only bitcoin. Bitcoin was existing before Binance. Can water still exist if no human living on earth again?
Tether is just a stable coin and nothing more. There are other stable coins like USDC and the better ones like DAI.
Can crypto survive without the centralise organizations and projects?
The first bitcoin trade which was now recognized as the Pizza day was not carried out on an exchange, it was direct p2p.