[rostigerpudel]

This making money has nothing to do with any intrinsic use-case or value of Bitcoin. As an intermediary (under which I also comprehend banks in terms of "tulip storage") you always make money whether your client wins, loses or absent-mindedly walks over a monetary cliff.

Making money trading or storing something does not mean that something has a use-case (hence the tulips example). So the fact that people make money off other people who think Bitcoin is the best thing since sliced bread does not mean Bitcoin has any use-case or intrinsic value.