You are speaking in extreme hypotheticals. I am unaware of any set of features that require a blockchain to satisfy them. Is there an as of yet unknown set of features that require a blockchain? I don't know but I'm unaware of any such set right now and your reluctance to specify such a set suggests that you don't know of them either.
Really? You are going to claim that there is literally zero features that a blockchain provides, that are not solved elsewhere?
Like, you think there are equally good ways to solve the double spend problem, on a public ledger, in a decentralized manner, with no central authority, without a blockchain, and the various consensus algorithms involved in that?
Ok, if you have a magic, better than blockchain solution that solves the Byzantine generals problem, and allows you to run a global, public, decentralized ledger, with no central authorities, that solves the double spending problem, then I would encourage you to release it and make billions and billions of dollars from that.
If you've got this magic solution, you could make so much money doing the same thing that blockchains and consensus algorithms do, in a better way.
The money is yours for the taking! Or maybe you could win a turning award! Go for it!
Go release a research paper, with your better than blockchain solution, and get a PhD from it, or computer science award, or billions of dollars in funding.
I look forward to you releasing your groundbreaking research paper, and upending the entire industry.
