The people who made the most so far are the ones who invested when Bitcoin and Ethereum were worth like R10 a coin. And then forgot about them until it exploded. Then dumped when it peaked, and bought again when that caused a massive dip, and rinsed and repeated. And they're still doing that today. The beauty about crypto is access to the ledgers: seeing the amount of crypto moving between addresses is sickening sometimes. Like, money you can't even imagine.
This is a very, very long game. And like every will tell you, don't spend more than you're willing to lose. This isn't a get rich scheme (for everyone).