Your post even answered your own question.
First:
Speculation - The fact that it's Bitcoin-style distribution has raised many people's eyes for it.
Second:
Demand: With little demand and big whales buying, they make the price go up
Third:
New community and still a lot to be explored.
Put it all together and give the result. But in the long run, it's the danger that lives there.
Scarcas can be attractive, but if the tribe doesn't innovate, doesn't bring anything new, absolutely nothing that adds, over time the value will drop. Leo has several updates and jobs. Only, many people's eyes have changed from LEO to POB as it is a place where various subjects can be written without having to be just one subject. The rest is history.
Now let's wait and see. xD