Web2 had a lot of stars align to become "the next big thing". (The newfound capacity for advertising, smartphones driving adoption, and the mechanisms for tracking and stealing user data). And none of those stars had to deal with privacy, decentralization, security, encryption, etc. All of these things that we have been trying to get consumers to value and consider for years; are actually antithetical to corporation's profit incentive. The tech industry has tried for a very long time. The concepts behind web3, such as decentralization, are not new. They have been tried, and created, and even somewhat adopted, for a VERY long time. Blockchain is just the new mechanism to try and attack this, but like most things on the internet, the problem is not a technical one: It's a social and economic one.
Until you talk about dismantling capitalism, I don't see web3 as being anything more than a natural cycle of niche internet interest combined with speculative market scams that entrap vulnerable populations into caring about it just long enough for them get burned on the latest crypto rugpull.