There are several interesting things to notice here:
Firstly, the simple fact that so many people look up to a single individual like this that's nothing but a rapper.
Secondly, that they blindly invest and/or support his endeavors.
Fanboys will agree with whatever they idol says.
I think that those who lost out has learned some very important lessons: People care about themselves first, fans are for most musicians nothing they particularly care about once they become big enough. And is really a single individual worthy of all that attention and admiration? And lastly, you never invest in something because your idol just tweeted about it, it might pique your interest, but do your own research.
Sometimes I cannot stop to be amused of the silliness of people.