Future_of_blockchain

Today I had a minute to reflect on cryptocurrency as a direction of information technology development, and the following thoughts came to my mind:
Let's start with the fact that the blockchain system itself is currently a good data protector, being a decentralized entity that is not controlled by any specific groups of people capable of leaking user data. But this is already known to everyone; it can be learned at Binance Academy when taking courses. However, what really interests me is the position of blockchain in the perspective of 20-30 years. Right now, hashing allows for data protection, is a one-way operation, and hashes are very slow to decrypt, etc., but that's the current state.