I think I will say two things are responsible for that. One is that, when something is new, it creates a hype and people want to be associated with it, they cluster on it like bees.So, the first leads to the second. Therefore, because they have clustered on it, they available space because unavailable with time because of high demand.
That is what I think has happened so far. Some of those freelancing jobs could see be available but because many people like you are now in need of such jobs, it can't go round.