I agreed until you said block chain.
But I still think it would be... more likely to succeed, maybe... to evolve from the set of shared concepts and based on a common understanding of the benefits and flaws of the web.
One issue is that, respectfully, not everyone who thinks they've nailed the concepts and flaws of the web has. If you can't explain why HTML is important and recognize it needs to evolve and how, you don't have the necessary foundation yet. If you think replacing it with script is the right move, think again. Not to go all "appeal to authority" on you, but even Brenden Eich agrees.
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