Those who earn massively in trading are the ones who are patient and can wait 1-2 years (or more) before selling. So you earn a lot when you do research, choose a coin, get into it with serious money, and then wait for years. That's how people earn a lot with trading, it's a quick process.
People who wish to earn quickly use leverage or futures trading, but those two are very risky even for experienced traders. In my opinion, both are like gambling, people can earn a lot pretty quickly but the risk is huge. So it's pretty simple, those who want to make a lot of money quickly are exposed to much greater risk than those who invest in projects that have a chance to grow and become more valuable over time.
Those who buy and hold cryptocurrencies for 1 or 2 years before they sell them are considered investors and not traders because a trader is supposed to buy something and sell it not very late after that. So if I'm buying Bitcoin, keeping it for 2 years or more, and then selling it when I see I'm getting enough profit from it, I'm an investor, but if I'm buying Bitcoin or other cryptocurrencies, waiting for a few hours, a day or two, or even a week, and then sell them back to get some profit, I'm a trader.
I also believe that a trader, if successful, earns more than an investor because even if an investor can earn a lot of money in the long run, a trader can earn double that amount if they stay active and keep trading because even if you earn 2% a day from day trading, you will earn 730% a year approximately since there can be ups and down.