Using logic, crypto cannot change the situation from poor to rich. It cannot make poor countries rich as most of them have said here.
Crypto is only a system or familiar with the term digital currency that is used to transact digitally without involving a third party. Because there are so many types, the value and price are also not the same.
Anyone can use crypto and anyone can choose the type of crypto they want with the desired use by anyone who has it.
I just want to say that Bitcoin is Bitcoin and crypto is not necessarily one type.