The original difference is that the methods of developed countries should be more robust and mature. This difference is not a matter of one person, but it is the entire countrys perception of investment methods.
Thousands of methods of earning money but the problem is capital. When you have no money how can you earn money? Although you know best ways of making money. Poor countries cannot invest big capital because they hardly overcome their daily needs and crypto investment needs extra money, so if you lose you will not be upset.