We have some of the most intelligent people in the world working on extracting as much wealth as possible from high volume trading. For someone to gain money in the market someone most lose. Imagine if we had these minds working on solving real world problems that would actually benefit society. Just like gambling, trading is zero sum.
It's important to completely understand that law, to start earning at trading. 95% of people are losing money in long-term.
But i don't think that trading is "just like gambling". Traders/investors are helping the market, by taking the risk of "losing". Also traders are some sort of arbiter/judge. They are making the hole world progress faster and more effectively, by choosing the "good" projects.
You have spoken well because crypto trading and gambling are indeed alike because they both involve in risk taking and every prediction make in trading are totally not guarantee but learn to understand laws, rules and regulations of trading are the only thing which make a crypto trader understand to enter and exit the market. Besides, it will also make crypto trader to confident about the future of crypto market even though the are not looking good like this days.