Why? All of that stuff came out of a growing internet. It didn’t come pre-packaged. I’m not saying there aren’t better internets in the future, I am saying this one is low friction and by throwing everything on a blockchain you remove the frictionless environment. And honestly I don’t see how any of that negative stuff goes away in your proposal.
I am not sure why you think it’s expensive to get a website up and running.
Developers who charge by business value rather than time could charge $15k for customizing a PHP CMS in a few hours and preparing it for the client. The client thinks they built everything by hand and they're grateful because their customers "ring in" about it.
Most blockchains are public, static in their blocks and ever-present. People say it's a solution looking for a problem: well there's a massive problem it solves. Using it as a decentralized library of intelligence and innovation, and like a forest, there's that ever-present reach for sunlight - ie human attention and whoever gets it, gets rewarded. Like with a forest and life. As someone else said it's just a permissionless P2P network but it can be applied differently.
I am not sure why you think it’s expensive to get a website up and running.