There is no need to divide the question into three parts, perhaps Bitcoin advertising is not particularly successful, but if you interview most of the traders who are on the stock exchanges, they will all tell you in one voice how successfully they raised their capital with this famous coin. Yes, many have lost, especially when they bought Bitcoin for 18 thousand dollars, and now they have a huge minus, but this is a mistake of everyone who did it, and it is a big passion and probably greed. I would not say that banks and Fiat are bad, especially since many banks will connect Bitcoin to their system.