Ethereum is, what, 6 years old. Metamask has been in development for 5 years. Bitcoin is 12 years old.
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.
Technologies mature at different rates. ARPAnet was created in the 1960s. www was created in 1989. Yahoo & Netscape were started in 1994. Foundational infrastructure is rarely explosive in growth.
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.
They haven't 'found' a single practical use case other than for some speculators who think they have a 'store of value'.
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.
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.