> Plenty of great ideas and easy-to-see use cases from that first paragraph alone.
Such as?
Blockchains enable trust-less and decentralized ledgers at the expense of major trade-offs (user experience, lack of transaction reversibility, proof-of-work to secure the network, etc).
Most useful business happens off-chain in the real-world, so you need to bridge between blockchain state and real-world state using a trusted party which throws away all the decentralization and trustlessness advantages, so you may as well just let the trusted party run a conventional database directly, and avoid the major trade-offs.
I can't think of many useful & valuable use-cases that happen fully on-chain with no off-chain interactions, aside from cryptocurrencies. As soon as you have off-chain interactions (which is most of blockchain usage outside of cryptocurrency applications), the value proposition of using a blockchain goes away and a database makes more sense.
Such as?
Blockchains enable trust-less and decentralized ledgers at the expense of major trade-offs (user experience, lack of transaction reversibility, proof-of-work to secure the network, etc).
Most useful business happens off-chain in the real-world, so you need to bridge between blockchain state and real-world state using a trusted party which throws away all the decentralization and trustlessness advantages, so you may as well just let the trusted party run a conventional database directly, and avoid the major trade-offs.
I can't think of many useful & valuable use-cases that happen fully on-chain with no off-chain interactions, aside from cryptocurrencies. As soon as you have off-chain interactions (which is most of blockchain usage outside of cryptocurrency applications), the value proposition of using a blockchain goes away and a database makes more sense.