The name 'web3' has almost nothing to do with the world-wide web. The problem-space is focused on managing trust relationships (heavy focus on financial contracts but trust is so generic it extends to far more uses.) You can focus on infrastructure as part of that dynamic (decentralized platforms help build resilience), but its not the actual purpose of the tech. Comparing blockchain technology to the web misses the point of what is being built on top of new ledger technology.