Bitcoin is older than React.js. Ethereum has been around for as long as TikTok. Uber was founded in the same year as Bitcoin and has essentially destroyed a worldwide industry.
At some point these things aren't young or early, they're just stupid.
It's also unclear how you're measuring success. By market cap, Bitcoin beats out all three of your examples (React, TikTok, & Uber). But it's also a bit weird to compare Bitcoin to two of the fastest growing consumer companies in recent memory. It's apples & oranges.
Reading this thread it's clear Web3 doesn't really have a use case either, it's more like a concept.
These have many parallels in industry - there are tons of products that never got made because they didn't make a whole lot of sense even though they were cool. The difference being, people can chose to spend their own time on these things now if they so choose and a lot of people do.
It's like a distributed technical artistic counter-cultural social movement except the artists believe they're doing something more practical than they probably are.