Proof-of-work blockchains were developed to solve a problem that only exists in a small percentage of distributed engineering use-cases. Unless you need to build a "censorship-free" peer-to-peer ledger distributed among untrusted, anonymous participants, the complexity costs and latency and computation costs simply aren't worth it. It's the same reason that Ford doesn't build a tunnel under the US/Mexico border to fe…
Very good points. In complex financial transactions (at least within regulatory domains), my understanding is that rollbacks can and do happen. I initially thought across borders/regulatory domains, blockchain will shine. I haven't seen a killer application just yet. It is a bit frustrating because the tech is indeed interesting .. we just don't have multi-billion dollar real (as opposed to imagined) use-cases beyond…
Massive institutions with billions of dollars at stake would rather have a predictable and stable regulatory regime to conduct transactions in the shadow of then to rely on a technical solution that supposedly obviates the need for one. Things come up -- bugs, acts of god, internal fraud, hacking, flash crashes, and so forth and so on. They want to be able to go to arbitrator and ask for a sensible and reasonable result and not be reliant on a totally inflexible mechanical rule set. Not the least of which because they can afford the very best lawyers to try to convince those arbitrators that what they want is sensible and reasonable.