Of course bitcoin millionaires deserve their wealth. Just want to contradict this phase here "but many of these people don´t have any particular knowledge of the economy nor business, Do you think that is a fair situation?" First, Its not true. Because I believe, for you to become a millionaire is your knowledge plays a very important role to make big money in this industry. Second, they work hard for it. They might even put their personal savings here in bitcoin because they believe they can earn big profit in return. Its just right and fair. They work smart & work hard with it.