If banks actually use blockchain and issue standard central bank currencies or CBDCs which they call, this would be the same as Bitcoin or crypto in general?
Bitcoin wasn't created so that the banking cartels and world governments can have an easier task to monitor who owns what and who pays how much to whom. That's what centralized digital banking assets are supposed to do. Bitcoin is decentralized with a worldwide use case.
2. Smart contracts, Defi and NFT.
Bitcoin has very limited smart-contract functionalities. Ethereum offers more possibilities. But it has many dangers that stem from badly-configured smart contracts, like the DAO hack showed us. Or take any of the breeches, hacks, or exit scams of various DeFi platforms.
Maybe one day the real Satoshi appeared and did a patent the blockchain. Is this the real purpose of Satoshi's intention to create Bitcoin?
Bitcoin is the first and most successful use case of blockchain technology. I don't see how you could patent something that is open-source, community developed, and doesn't belong to anyone, but at the same time belongs to everyone.