If I had the resources, I would rebuild all of the consumer-facing web apps using blockchain-based smart contracts. I expect that all web apps will be rebuilt i

If I had the resources, I would rebuild all of the consumer-facing web apps using blockchain-based smart contracts. I expect that all web apps will be rebuilt in this way to an extent, either from within or by way of competition. So "impossible" is a charged word, as is "easy". I would say that it was previously far more costly and difficult to implement the following: - programmable, highly-reliable, do-it-yourself financial instruments - services that cannot feasibly be shut down - verifiably revocable authentication - data that cannot be modified or deleted - functionality that cannot be modified or deleted - complex business interactions involving numerous parties that can be verifiably traced, from start to finish Disclaimer, because everyone loves to bring up The DAO incident: the above capabilities hold true unless the community decides otherwise after a ridiculously onerous debate. Even then, the unaltered data/code can still live on.