China would probably be the best case study available, but they are of course notoriously difficult to get reliable data about. DeFi (Ethereum Decentralized Fin

China would probably be the best case study available, but they are of course notoriously difficult to get reliable data about. DeFi (Ethereum Decentralized Finance) would be the next best case study but finding someone capable of wading through all of the scams to find the actual projects is going to be almost as hard as getting reliable data out of China.