I have many friends who started from really humble beginnings ~5 years ago (or instance, a typical small business like "an e-shop selling bullshit Chinese gizmos online making 20k per month"), and are now uber rich in crypto. Like, hundreds of millions in net worth and spending 200-400k per month. And yes, they don't invest their money anywhere except new and new crypto projects themselves, just because they don't know anything that gives near similar returns. Not one-off success, but 5-10 or more different avenues of making money there (but certainly none of them was about "trading coins" or passively investing in them).